76669631 has 4 divisors (see below), whose sum is σ = 78539664. Its totient is φ = 74799600.

The previous prime is 76669613. The next prime is 76669639. The reversal of 76669631 is 13696667.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76669631 is a prime.

It is a super-2 number, since 2×76669631² = 11756464635352322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76669639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934955 + ... + 935036.

It is an arithmetic number, because the mean of its divisors is an integer number (19634916).

Almost surely, 2^76669631 is an apocalyptic number.

76669631 is a deficient number, since it is larger than the sum of its proper divisors (1870033).

76669631 is a wasteful number, since it uses less digits than its factorization.

76669631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870032.

The product of its digits is 244944, while the sum is 44.

The square root of 76669631 is about 8756.1196314349. The cubic root of 76669631 is about 424.8227745500.

The spelling of 76669631 in words is "seventy-six million, six hundred sixty-nine thousand, six hundred thirty-one".