77916582 has 24 divisors (see below), whose sum is σ = 170856504. Its totient is φ = 25658784.

The previous prime is 77916577. The next prime is 77916583. The reversal of 77916582 is 28561977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77916583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24583 + ... + 27570.

It is an arithmetic number, because the mean of its divisors is an integer number (7119021).

Almost surely, 2^77916582 is an apocalyptic number.

77916582 is an abundant number, since it is smaller than the sum of its proper divisors (92939922).

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

77916582 is a wasteful number, since it uses less digits than its factorization.

77916582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52244 (or 52241 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 77916582 is about 8827.0369887069. The cubic root of 77916582 is about 427.1134990350.

The spelling of 77916582 in words is "seventy-seven million, nine hundred sixteen thousand, five hundred eighty-two".