68564836 has 6 divisors (see below), whose sum is σ = 119988470. Its totient is φ = 34282416.

The previous prime is 68564831. The next prime is 68564857. The reversal of 68564836 is 63846586.

It can be written as a sum of positive squares in only one way, i.e., 50126400 + 18438436 = 7080^2 + 4294^2 .

It is a super-2 number, since 2×68564836² = 9402273471413792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68564831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8570601 + ... + 8570608.

Almost surely, 2^68564836 is an apocalyptic number.

It is an amenable number.

68564836 is a deficient number, since it is larger than the sum of its proper divisors (51423634).

68564836 is a wasteful number, since it uses less digits than its factorization.

68564836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17141213 (or 17141211 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 68564836 is about 8280.3886382222. The cubic root of 68564836 is about 409.2925257082.

The spelling of 68564836 in words is "sixty-eight million, five hundred sixty-four thousand, eight hundred thirty-six".