68663724 has 24 divisors (see below), whose sum is σ = 160789440. Its totient is φ = 22805904.

The previous prime is 68663723. The next prime is 68663737. The reversal of 68663724 is 42736686.

It is not an unprimeable number, because it can be changed into a prime (68663723) 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, 6714 + ... + 13505.

It is an arithmetic number, because the mean of its divisors is an integer number (6699560).

Almost surely, 2^68663724 is an apocalyptic number.

It is an amenable number.

68663724 is an abundant number, since it is smaller than the sum of its proper divisors (92125716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68663724 is a wasteful number, since it uses less digits than its factorization.

68663724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20509 (or 20507 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 68663724 is about 8286.3577040821. The cubic root of 68663724 is about 409.4891992959.

The spelling of 68663724 in words is "sixty-eight million, six hundred sixty-three thousand, seven hundred twenty-four".