77212960 has 96 divisors (see below), whose sum is σ = 209563200. Its totient is φ = 26588160.

The previous prime is 77212957. The next prime is 77212973. The reversal of 77212960 is 6921277.

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, 32286 + ... + 34594.

It is an arithmetic number, because the mean of its divisors is an integer number (2182950).

Almost surely, 2^77212960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77212960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104781600).

77212960 is an abundant number, since it is smaller than the sum of its proper divisors (132350240).

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

77212960 is a wasteful number, since it uses less digits than its factorization.

77212960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354 (or 2346 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 77212960 is about 8787.0905310006. The cubic root of 77212960 is about 425.8239333542.

The spelling of 77212960 in words is "seventy-seven million, two hundred twelve thousand, nine hundred sixty".