724342688 has 12 divisors (see below), whose sum is σ = 1426049730. Its totient is φ = 362171328.

The previous prime is 724342669. The next prime is 724342693. The reversal of 724342688 is 886243427.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 618417424 + 105925264 = 24868^2 + 10292^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11317823 + ... + 11317886.

Almost surely, 2^724342688 is an apocalyptic number.

It is an amenable number.

724342688 is a deficient number, since it is larger than the sum of its proper divisors (701707042).

724342688 is a wasteful number, since it uses less digits than its factorization.

724342688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22635719 (or 22635711 counting only the distinct ones).

The product of its digits is 516096, while the sum is 44.

The square root of 724342688 is about 26913.6152904065. The cubic root of 724342688 is about 898.0793146909.

The spelling of 724342688 in words is "seven hundred twenty-four million, three hundred forty-two thousand, six hundred eighty-eight".