8315691720 has 128 divisors (see below), whose sum is σ = 29430743040. Its totient is φ = 1839409920.

The previous prime is 8315691719. The next prime is 8315691733. The reversal of 8315691720 is 271965138.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133632 + ... + 185711.

It is an arithmetic number, because the mean of its divisors is an integer number (229927680).

Almost surely, 2^8315691720 is an apocalyptic number.

It is an amenable number.

8315691720 is an abundant number, since it is smaller than the sum of its proper divisors (21115051320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8315691720 is a wasteful number, since it uses less digits than its factorization.

8315691720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319395 (or 319391 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 8315691720 is about 91190.4146278544. The cubic root of 8315691720 is about 2025.9689896884.

The spelling of 8315691720 in words is "eight billion, three hundred fifteen million, six hundred ninety-one thousand, seven hundred twenty".