77945536 has 14 divisors (see below), whose sum is σ = 154673300. Its totient is φ = 38972736.

The previous prime is 77945521. The next prime is 77945579. The reversal of 77945536 is 63554977.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608886 + ... + 609013.

Almost surely, 2^77945536 is an apocalyptic number.

It is an amenable number.

77945536 is a deficient number, since it is larger than the sum of its proper divisors (76727764).

77945536 is a wasteful number, since it uses less digits than its factorization.

77945536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217911 (or 1217901 counting only the distinct ones).

The product of its digits is 793800, while the sum is 46.

The square root of 77945536 is about 8828.6769110666. The cubic root of 77945536 is about 427.1663979705.

The spelling of 77945536 in words is "seventy-seven million, nine hundred forty-five thousand, five hundred thirty-six".