721472504 has 8 divisors (see below), whose sum is σ = 1352760960. Its totient is φ = 360736248.

The previous prime is 721472501. The next prime is 721472519. The reversal of 721472504 is 405274127.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721472501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45092024 + ... + 45092039.

It is an arithmetic number, because the mean of its divisors is an integer number (169095120).

Almost surely, 2^721472504 is an apocalyptic number.

It is an amenable number.

721472504 is a deficient number, since it is larger than the sum of its proper divisors (631288456).

721472504 is a wasteful number, since it uses less digits than its factorization.

721472504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90184069 (or 90184065 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 721472504 is about 26860.2402074144. The cubic root of 721472504 is about 896.8915412522.

The spelling of 721472504 in words is "seven hundred twenty-one million, four hundred seventy-two thousand, five hundred four".