77133868 has 24 divisors (see below), whose sum is σ = 157181472. Its totient is φ = 32433024.

The previous prime is 77133857. The next prime is 77133869. The reversal of 77133868 is 86833177.

It is not an unprimeable number, because it can be changed into a prime (77133869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24505 + ... + 27472.

It is an arithmetic number, because the mean of its divisors is an integer number (6549228).

Almost surely, 2^77133868 is an apocalyptic number.

It is an amenable number.

77133868 is an abundant number, since it is smaller than the sum of its proper divisors (80047604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77133868 is a wasteful number, since it uses less digits than its factorization.

77133868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52041 (or 52039 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 77133868 is about 8782.5889121602. The cubic root of 77133868 is about 425.6784881132.

The spelling of 77133868 in words is "seventy-seven million, one hundred thirty-three thousand, eight hundred sixty-eight".