721674051 has 16 divisors (see below), whose sum is σ = 1101398784. Its totient is φ = 411745824.

The previous prime is 721674029. The next prime is 721674053. The reversal of 721674051 is 150476127.

It is not a de Polignac number, because 721674051 - 2⁹ = 721673539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (721674053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12601 + ... + 40026.

It is an arithmetic number, because the mean of its divisors is an integer number (68837424).

Almost surely, 2^721674051 is an apocalyptic number.

721674051 is a deficient number, since it is larger than the sum of its proper divisors (379724733).

721674051 is a wasteful number, since it uses less digits than its factorization.

721674051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53290.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 721674051 is about 26863.9917175389. The cubic root of 721674051 is about 896.9750505421.

The spelling of 721674051 in words is "seven hundred twenty-one million, six hundred seventy-four thousand, fifty-one".