7685332731 has 20 divisors (see below), whose sum is σ = 11488877400. Its totient is φ = 5119842816.

The previous prime is 7685332727. The next prime is 7685332771. The reversal of 7685332731 is 1372335867.

7685332731 is a `hidden beast` number, since 7 + 68 + 533 + 27 + 31 = 666.

It is not a de Polignac number, because 7685332731 - 2² = 7685332727 is a prime.

It is a super-2 number, since 2×7685332731² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7685332771) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 80460 + ... + 147798.

It is an arithmetic number, because the mean of its divisors is an integer number (574443870).

Almost surely, 2^7685332731 is an apocalyptic number.

7685332731 is a deficient number, since it is larger than the sum of its proper divisors (3803544669).

7685332731 is a wasteful number, since it uses less digits than its factorization.

7685332731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68760 (or 68751 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 7685332731 is about 87666.0295154286. The cubic root of 7685332731 is about 1973.4262081705.

The spelling of 7685332731 in words is "seven billion, six hundred eighty-five million, three hundred thirty-two thousand, seven hundred thirty-one".