724631972 has 6 divisors (see below), whose sum is σ = 1268105958. Its totient is φ = 362315984.

The previous prime is 724631969. The next prime is 724631981. The reversal of 724631972 is 279136427.

It can be written as a sum of positive squares in only one way, i.e., 626701156 + 97930816 = 25034^2 + 9896^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90578993 + ... + 90579000.

It is an arithmetic number, because the mean of its divisors is an integer number (211350993).

Almost surely, 2^724631972 is an apocalyptic number.

It is an amenable number.

724631972 is a deficient number, since it is larger than the sum of its proper divisors (543473986).

724631972 is a wasteful number, since it uses less digits than its factorization.

724631972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181157997 (or 181157995 counting only the distinct ones).

The product of its digits is 127008, while the sum is 41.

The square root of 724631972 is about 26918.9890597697. The cubic root of 724631972 is about 898.1988554380.

The spelling of 724631972 in words is "seven hundred twenty-four million, six hundred thirty-one thousand, nine hundred seventy-two".