813697372 has 12 divisors (see below), whose sum is σ = 1424187576. Its totient is φ = 406786640.

The previous prime is 813697307. The next prime is 813697387. The reversal of 813697372 is 273796318.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26847 + ... + 48457.

It is an arithmetic number, because the mean of its divisors is an integer number (118682298).

Almost surely, 2^813697372 is an apocalyptic number.

It is an amenable number.

813697372 is a deficient number, since it is larger than the sum of its proper divisors (610490204).

813697372 is a wasteful number, since it uses less digits than its factorization.

813697372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31028 (or 31026 counting only the distinct ones).

The product of its digits is 381024, while the sum is 46.

The square root of 813697372 is about 28525.3811893899. The cubic root of 813697372 is about 933.5859441519.

The spelling of 813697372 in words is "eight hundred thirteen million, six hundred ninety-seven thousand, three hundred seventy-two".