761645331 has 12 divisors (see below), whose sum is σ = 1100862360. Its totient is φ = 507436800.

The previous prime is 761645327. The next prime is 761645363. The reversal of 761645331 is 133546167.

761645331 is a `hidden beast` number, since 7 + 6 + 1 + 645 + 3 + 3 + 1 = 666.

761645331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 761645331 - 2² = 761645327 is a prime.

It is a super-2 number, since 2×761645331² = 1160207220468199122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (761645321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12021 + ... + 40838.

It is an arithmetic number, because the mean of its divisors is an integer number (91738530).

Almost surely, 2^761645331 is an apocalyptic number.

761645331 is a deficient number, since it is larger than the sum of its proper divisors (339217029).

761645331 is a wasteful number, since it uses less digits than its factorization.

761645331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54466 (or 54463 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 761645331 is about 27597.9225848613. The cubic root of 761645331 is about 913.2386037430.

The spelling of 761645331 in words is "seven hundred sixty-one million, six hundred forty-five thousand, three hundred thirty-one".