77942764 has 12 divisors (see below), whose sum is σ = 136582600. Its totient is φ = 38919168.

The previous prime is 77942747. The next prime is 77942783. The reversal of 77942764 is 46724977.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9594 + ... + 15745.

Almost surely, 2^77942764 is an apocalyptic number.

It is an amenable number.

77942764 is a deficient number, since it is larger than the sum of its proper divisors (58639836).

77942764 is a wasteful number, since it uses less digits than its factorization.

77942764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26112 (or 26110 counting only the distinct ones).

The product of its digits is 592704, while the sum is 46.

The square root of 77942764 is about 8828.5199212552. The cubic root of 77942764 is about 427.1613340958.

It can be divided in two parts, 77 and 942764, that added together give a square (942841 = 971²).

The spelling of 77942764 in words is "seventy-seven million, nine hundred forty-two thousand, seven hundred sixty-four".