721360456 has 32 divisors (see below), whose sum is σ = 1435644000. Its totient is φ = 338626816.

The previous prime is 721360447. The next prime is 721360463. The reversal of 721360456 is 654063127.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50655 + ... + 63313.

It is an arithmetic number, because the mean of its divisors is an integer number (44863875).

Almost surely, 2^721360456 is an apocalyptic number.

It is an amenable number.

721360456 is a deficient number, since it is larger than the sum of its proper divisors (714283544).

721360456 is a wasteful number, since it uses less digits than its factorization.

721360456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13101 (or 13097 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 721360456 is about 26858.1543669702. The cubic root of 721360456 is about 896.8451083871.

The spelling of 721360456 in words is "seven hundred twenty-one million, three hundred sixty thousand, four hundred fifty-six".