77968366 has 16 divisors (see below), whose sum is σ = 135544320. Its totient is φ = 32943960.

The previous prime is 77968357. The next prime is 77968411. The reversal of 77968366 is 66386977.

It is a congruent 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, 38226 + ... + 40213.

It is an arithmetic number, because the mean of its divisors is an integer number (8471520).

Almost surely, 2^77968366 is an apocalyptic number.

77968366 is a deficient number, since it is larger than the sum of its proper divisors (57575954).

77968366 is a wasteful number, since it uses less digits than its factorization.

77968366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78519.

The product of its digits is 2286144, while the sum is 52.

The square root of 77968366 is about 8829.9697621226. The cubic root of 77968366 is about 427.2080991266.

The spelling of 77968366 in words is "seventy-seven million, nine hundred sixty-eight thousand, three hundred sixty-six".