68517536 has 24 divisors (see below), whose sum is σ = 135887220. Its totient is φ = 34006528.

The previous prime is 68517521. The next prime is 68517563. The reversal of 68517536 is 63571586.

It can be written as a sum of positive squares in 2 ways, for example, as 57093136 + 11424400 = 7556^2 + 3380^2 .

It is a super-2 number, since 2×68517536² = 9389305479022592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68517493 and 68517502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3431 + ... + 12198.

Almost surely, 2^68517536 is an apocalyptic number.

It is an amenable number.

68517536 is a deficient number, since it is larger than the sum of its proper divisors (67369684).

68517536 is a wasteful number, since it uses less digits than its factorization.

68517536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15776 (or 15768 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 68517536 is about 8277.5319993341. The cubic root of 68517536 is about 409.1983861508.

The spelling of 68517536 in words is "sixty-eight million, five hundred seventeen thousand, five hundred thirty-six".