77351616 has 42 divisors (see below), whose sum is σ = 221716092. Its totient is φ = 25783680.

The previous prime is 77351611. The next prime is 77351663. The reversal of 77351616 is 61615377.

77351616 is a `hidden beast` number, since 7 + 7 + 35 + 1 + 616 = 666.

It is a super-2 number, since 2×77351616² = 11966544995622912, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (77351611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66570 + ... + 67721.

Almost surely, 2^77351616 is an apocalyptic number.

It is an amenable number.

77351616 is an abundant number, since it is smaller than the sum of its proper divisors (144364476).

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

77351616 is a wasteful number, since it uses less digits than its factorization.

77351616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134309 (or 134296 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 77351616 is about 8794.9767481216. The cubic root of 77351616 is about 426.0786735607.

The spelling of 77351616 in words is "seventy-seven million, three hundred fifty-one thousand, six hundred sixteen".