68602531 has 6 divisors (see below), whose sum is σ = 72875660. Its totient is φ = 64566816.

The previous prime is 68602493. The next prime is 68602549. The reversal of 68602531 is 13520686.

It is not a de Polignac number, because 68602531 - 2¹⁵ = 68569763 is a prime.

It is a super-2 number, since 2×68602531² = 9412614519211922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68602493 and 68602502.

It is not an unprimeable number, because it can be changed into a prime (68602561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118401 + ... + 118978.

Almost surely, 2^68602531 is an apocalyptic number.

68602531 is a deficient number, since it is larger than the sum of its proper divisors (4273129).

68602531 is a wasteful number, since it uses less digits than its factorization.

68602531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237413 (or 237396 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 68602531 is about 8282.6644867458. The cubic root of 68602531 is about 409.3675177701.

The spelling of 68602531 in words is "sixty-eight million, six hundred two thousand, five hundred thirty-one".