723372644 has 48 divisors (see below), whose sum is σ = 1389975552. Its totient is φ = 327992832.

The previous prime is 723372623. The next prime is 723372677. The reversal of 723372644 is 446273327.

It is a happy number.

723372644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 723372598 and 723372607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267869 + ... + 270555.

It is an arithmetic number, because the mean of its divisors is an integer number (28957824).

Almost surely, 2^723372644 is an apocalyptic number.

723372644 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

723372644 is a deficient number, since it is larger than the sum of its proper divisors (666602908).

723372644 is a wasteful number, since it uses less digits than its factorization.

723372644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852 (or 2850 counting only the distinct ones).

The product of its digits is 169344, while the sum is 38.

The square root of 723372644 is about 26895.5878165918. The cubic root of 723372644 is about 897.6782312214.

The spelling of 723372644 in words is "seven hundred twenty-three million, three hundred seventy-two thousand, six hundred forty-four".