77066136 has 48 divisors (see below), whose sum is σ = 238539600. Its totient is φ = 22018752.

The previous prime is 77066107. The next prime is 77066177. The reversal of 77066136 is 63166077.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 77066136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75951 + ... + 76958.

It is an arithmetic number, because the mean of its divisors is an integer number (4969575).

Almost surely, 2^77066136 is an apocalyptic number.

It is an amenable number.

77066136 is an abundant number, since it is smaller than the sum of its proper divisors (161473464).

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

77066136 is a wasteful number, since it uses less digits than its factorization.

77066136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152928 (or 152921 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 77066136 is about 8778.7320268932. The cubic root of 77066136 is about 425.5538541513.

The spelling of 77066136 in words is "seventy-seven million, sixty-six thousand, one hundred thirty-six".