977378136 has 64 divisors (see below), whose sum is σ = 2794990080. Its totient is φ = 279002880.

The previous prime is 977378081. The next prime is 977378147. The reversal of 977378136 is 631873779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276621 + ... + 280131.

It is an arithmetic number, because the mean of its divisors is an integer number (43671720).

Almost surely, 2^977378136 is an apocalyptic number.

It is an amenable number.

977378136 is an abundant number, since it is smaller than the sum of its proper divisors (1817611944).

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

977378136 is a wasteful number, since it uses less digits than its factorization.

977378136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184 (or 5180 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 51.

The square root of 977378136 is about 31263.0474522238. The cubic root of 977378136 is about 992.4017921256.

The spelling of 977378136 in words is "nine hundred seventy-seven million, three hundred seventy-eight thousand, one hundred thirty-six".