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8685109 = 193311381
BaseRepresentation
bin100001001000…
…011000110101
3121100020201201
4201020120311
54210410414
6510052501
7133552006
oct41103065
917306651
108685109
1149a2284
122aaa131
131a51224
1412211ad
15b68574
hex848635

8685109 has 8 divisors (see below), whose sum is σ = 9176480. Its totient is φ = 8197200.

The previous prime is 8685107. The next prime is 8685151. The reversal of 8685109 is 9015868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8685109 - 21 = 8685107 is a prime.

It is a super-2 number, since 2×86851092 = 150862236683762, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8685107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5599 + ... + 6979.

It is an arithmetic number, because the mean of its divisors is an integer number (1147060).

Almost surely, 28685109 is an apocalyptic number.

It is an amenable number.

8685109 is a deficient number, since it is larger than the sum of its proper divisors (491371).

8685109 is a wasteful number, since it uses less digits than its factorization.

8685109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 8685109 is about 2947.0508987800. The cubic root of 8685109 is about 205.5536018103.

The spelling of 8685109 in words is "eight million, six hundred eighty-five thousand, one hundred nine".

Divisors: 1 19 331 1381 6289 26239 457111 8685109