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68283487 = 298232861
BaseRepresentation
bin1000001000111…
…10110001011111
311202111011100001
410010132301133
5114440032422
610435315131
71456254136
oct404366137
9152434301
1068283487
11355a9438
121aa4baa7
13111ba43c
1490d691d
155edc227
hex411ec5f

68283487 has 8 divisors (see below), whose sum is σ = 70748640. Its totient is φ = 65825760.

The previous prime is 68283443. The next prime is 68283493. The reversal of 68283487 is 78438286.

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 68283487 - 211 = 68281439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68283427) 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, 22437 + ... + 25297.

It is an arithmetic number, because the mean of its divisors is an integer number (8843580).

Almost surely, 268283487 is an apocalyptic number.

68283487 is a deficient number, since it is larger than the sum of its proper divisors (2465153).

68283487 is a wasteful number, since it uses less digits than its factorization.

68283487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713.

The product of its digits is 516096, while the sum is 46.

The square root of 68283487 is about 8263.3822978245. The cubic root of 68283487 is about 408.7319278016.

The spelling of 68283487 in words is "sixty-eight million, two hundred eighty-three thousand, four hundred eighty-seven".

Divisors: 1 29 823 2861 23867 82969 2354603 68283487