77313634 has 4 divisors (see below), whose sum is σ = 115970454. Its totient is φ = 38656816.

The previous prime is 77313631. The next prime is 77313647. The reversal of 77313634 is 43631377.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48958009 + 28355625 = 6997^2 + 5325^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77313634.

It is not an unprimeable number, because it can be changed into a prime (77313631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19328407 + ... + 19328410.

Almost surely, 2^77313634 is an apocalyptic number.

77313634 is a deficient number, since it is larger than the sum of its proper divisors (38656820).

77313634 is a wasteful number, since it uses less digits than its factorization.

77313634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38656819.

The product of its digits is 31752, while the sum is 34.

The square root of 77313634 is about 8792.8171822232. The cubic root of 77313634 is about 426.0089229398.

The spelling of 77313634 in words is "seventy-seven million, three hundred thirteen thousand, six hundred thirty-four".