721470056 has 16 divisors (see below), whose sum is σ = 1354199040. Its totient is φ = 360350320.

The previous prime is 721470053. The next prime is 721470059. The reversal of 721470056 is 650074127.

It is an interprime number because it is at equal distance from previous prime (721470053) and next prime (721470059).

It is not an unprimeable number, because it can be changed into a prime (721470053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40040 + ... + 55191.

It is an arithmetic number, because the mean of its divisors is an integer number (84637440).

Almost surely, 2^721470056 is an apocalyptic number.

It is an amenable number.

721470056 is a deficient number, since it is larger than the sum of its proper divisors (632728984).

721470056 is a wasteful number, since it uses less digits than its factorization.

721470056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96184 (or 96180 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 721470056 is about 26860.1946381630. The cubic root of 721470056 is about 896.8905268486.

The spelling of 721470056 in words is "seven hundred twenty-one million, four hundred seventy thousand, fifty-six".