772664 has 16 divisors (see below), whose sum is σ = 1474200. Its totient is φ = 379552.

The previous prime is 772663. The next prime is 772669. The reversal of 772664 is 466277.

It is a happy number.

772664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 772664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772661) 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, 347 + ... + 1290.

2⁷⁷²⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

772664 is a deficient number, since it is larger than the sum of its proper divisors (701536).

772664 is a wasteful number, since it uses less digits than its factorization.

772664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702 (or 1698 counting only the distinct ones).

The product of its digits is 14112, while the sum is 32.

The square root of 772664 is about 879.0130829516. The cubic root of 772664 is about 91.7621455113.

The spelling of 772664 in words is "seven hundred seventy-two thousand, six hundred sixty-four".