76620664 has 16 divisors (see below), whose sum is σ = 145809000. Its totient is φ = 37738272.

The previous prime is 76620647. The next prime is 76620671. The reversal of 76620664 is 46602667.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70939 + ... + 72010.

Almost surely, 2^76620664 is an apocalyptic number.

It is an amenable number.

76620664 is a deficient number, since it is larger than the sum of its proper divisors (69188336).

76620664 is a wasteful number, since it uses less digits than its factorization.

76620664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143022 (or 143018 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 76620664 is about 8753.3230261427. The cubic root of 76620664 is about 424.7323140172.

It can be divided in two parts, 76620 and 664, that added together give a square (77284 = 278²).

The spelling of 76620664 in words is "seventy-six million, six hundred twenty thousand, six hundred sixty-four".