77157894 has 16 divisors (see below), whose sum is σ = 168344640. Its totient is φ = 23381160.

The previous prime is 77157887. The next prime is 77157919. The reversal of 77157894 is 49875177.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 584464 + ... + 584595.

It is an arithmetic number, because the mean of its divisors is an integer number (10521540).

Almost surely, 2^77157894 is an apocalyptic number.

77157894 is an abundant number, since it is smaller than the sum of its proper divisors (91186746).

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

77157894 is a wasteful number, since it uses less digits than its factorization.

77157894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169075.

The product of its digits is 493920, while the sum is 48.

The square root of 77157894 is about 8783.9566255760. The cubic root of 77157894 is about 425.7226809342.

The spelling of 77157894 in words is "seventy-seven million, one hundred fifty-seven thousand, eight hundred ninety-four".