724640638970 has 16 divisors (see below), whose sum is σ = 1304798830848. Its totient is φ = 289757215440.

The previous prime is 724640638933. The next prime is 724640638987. The reversal of 724640638970 is 79836046427.

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, 12349286 + ... + 12407825.

It is an arithmetic number, because the mean of its divisors is an integer number (81549926928).

Almost surely, 2^724640638970 is an apocalyptic number.

724640638970 is a deficient number, since it is larger than the sum of its proper divisors (580158191878).

724640638970 is a wasteful number, since it uses less digits than its factorization.

724640638970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24760045.

The product of its (nonzero) digits is 12192768, while the sum is 56.

The spelling of 724640638970 in words is "seven hundred twenty-four billion, six hundred forty million, six hundred thirty-eight thousand, nine hundred seventy".