76620665 has 8 divisors (see below), whose sum is σ = 100303488. Its totient is φ = 55724080.

The previous prime is 76620647. The next prime is 76620671. The reversal of 76620665 is 56602667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 76620665 - 2⁶ = 76620601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696497 + ... + 696606.

It is an arithmetic number, because the mean of its divisors is an integer number (12537936).

Almost surely, 2^76620665 is an apocalyptic number.

It is an amenable number.

76620665 is a deficient number, since it is larger than the sum of its proper divisors (23682823).

76620665 is a wasteful number, since it uses less digits than its factorization.

76620665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393119.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 76620665 is about 8753.3230832639. The cubic root of 76620665 is about 424.7323158649.

The spelling of 76620665 in words is "seventy-six million, six hundred twenty thousand, six hundred sixty-five".