77106664 has 16 divisors (see below), whose sum is σ = 144994500. Its totient is φ = 38441472.

The previous prime is 77106647. The next prime is 77106671. The reversal of 77106664 is 46660177.

It can be written as a sum of positive squares in 2 ways, for example, as 72080100 + 5026564 = 8490^2 + 2242^2 .

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, 11017 + ... + 16600.

Almost surely, 2^77106664 is an apocalyptic number.

It is an amenable number.

77106664 is a deficient number, since it is larger than the sum of its proper divisors (67887836).

77106664 is a wasteful number, since it uses less digits than its factorization.

77106664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27972 (or 27968 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 77106664 is about 8781.0400295181. The cubic root of 77106664 is about 425.6284386795.

It can be divided in two parts, 77 and 106664, that multiplied together give a palindrome (8213128).

The spelling of 77106664 in words is "seventy-seven million, one hundred six thousand, six hundred sixty-four".