77990316 has 12 divisors (see below), whose sum is σ = 181977432. Its totient is φ = 25996768.

The previous prime is 77990299. The next prime is 77990317. The reversal of 77990316 is 61309977.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (77990317) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3249585 + ... + 3249608.

It is an arithmetic number, because the mean of its divisors is an integer number (15164786).

Almost surely, 2^77990316 is an apocalyptic number.

It is an amenable number.

77990316 is an abundant number, since it is smaller than the sum of its proper divisors (103987116).

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

77990316 is a wasteful number, since it uses less digits than its factorization.

77990316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6499200 (or 6499198 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 77990316 is about 8831.2126007701. The cubic root of 77990316 is about 427.2481852043.

The spelling of 77990316 in words is "seventy-seven million, nine hundred ninety thousand, three hundred sixteen".