77243164 has 6 divisors (see below), whose sum is σ = 135175544. Its totient is φ = 38621580.

The previous prime is 77243147. The next prime is 77243191. The reversal of 77243164 is 46134277.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9655392 + ... + 9655399.

Almost surely, 2^77243164 is an apocalyptic number.

It is an amenable number.

77243164 is a deficient number, since it is larger than the sum of its proper divisors (57932380).

77243164 is a wasteful number, since it uses less digits than its factorization.

77243164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19310795 (or 19310793 counting only the distinct ones).

The product of its digits is 28224, while the sum is 34.

The square root of 77243164 is about 8788.8090205670. The cubic root of 77243164 is about 425.8794504133.

The spelling of 77243164 in words is "seventy-seven million, two hundred forty-three thousand, one hundred sixty-four".