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85372665 = 3572322953
BaseRepresentation
bin1010001011010…
…10111011111001
312221122101021120
411011222323321
5133323411130
612245455453
72054440620
oct505527371
9187571246
1085372665
1144210824
1224711589
13148c1991
14b4a46b7
157765910
hex516aef9

85372665 has 96 divisors (see below), whose sum is σ = 172005120. Its totient is φ = 35363328.

The previous prime is 85372631. The next prime is 85372669. The reversal of 85372665 is 56627358.

It is not a de Polignac number, because 85372665 - 214 = 85356281 is a prime.

Its product of digits (302400) is a multiple of the sum of its prime divisors (120).

It is not an unprimeable number, because it can be changed into a prime (85372669) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1610779 + ... + 1610831.

It is an arithmetic number, because the mean of its divisors is an integer number (1791720).

Almost surely, 285372665 is an apocalyptic number.

It is an amenable number.

85372665 is an abundant number, since it is smaller than the sum of its proper divisors (86632455).

85372665 is a wasteful number, since it uses less digits than its factorization.

85372665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 120 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 85372665 is about 9239.7329506864. The cubic root of 85372665 is about 440.3245969119.

The spelling of 85372665 in words is "eighty-five million, three hundred seventy-two thousand, six hundred sixty-five".

Divisors: 1 3 5 7 15 21 23 29 35 53 69 87 105 115 145 159 161 203 265 345 371 435 483 529 609 667 795 805 1015 1113 1219 1537 1587 1855 2001 2415 2645 3045 3335 3657 3703 4611 4669 5565 6095 7685 7935 8533 10005 10759 11109 14007 15341 18285 18515 23055 23345 25599 28037 32277 35351 42665 46023 53795 55545 70035 76705 84111 106053 107387 127995 140185 161385 176755 196259 230115 247457 322161 420555 530265 536935 588777 742371 813073 981295 1237285 1610805 2439219 2943885 3711855 4065365 5691511 12196095 17074533 28457555 85372665