68664824 has 16 divisors (see below), whose sum is σ = 129097320. Its totient is φ = 34238880.

The previous prime is 68664823. The next prime is 68664857. The reversal of 68664824 is 42846686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68664823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8522 + ... + 14489.

Almost surely, 2^68664824 is an apocalyptic number.

It is an amenable number.

68664824 is a deficient number, since it is larger than the sum of its proper divisors (60432496).

68664824 is a wasteful number, since it uses less digits than its factorization.

68664824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23390 (or 23386 counting only the distinct ones).

The product of its digits is 442368, while the sum is 44.

The square root of 68664824 is about 8286.4240779724. The cubic root of 68664824 is about 409.4913859707.

The spelling of 68664824 in words is "sixty-eight million, six hundred sixty-four thousand, eight hundred twenty-four".