77013856 has 12 divisors (see below), whose sum is σ = 151621092. Its totient is φ = 38506912.

The previous prime is 77013851. The next prime is 77013857. The reversal of 77013856 is 65831077.

It is a super-2 number, since 2×77013856² = 11862268031977472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77013851) 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 as a sum of consecutive naturals, namely, 1203310 + ... + 1203373.

It is an arithmetic number, because the mean of its divisors is an integer number (12635091).

Almost surely, 2^77013856 is an apocalyptic number.

It is an amenable number.

77013856 is a deficient number, since it is larger than the sum of its proper divisors (74607236).

77013856 is a wasteful number, since it uses less digits than its factorization.

77013856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406693 (or 2406685 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 77013856 is about 8775.7538707509. The cubic root of 77013856 is about 425.4576035394.

The spelling of 77013856 in words is "seventy-seven million, thirteen thousand, eight hundred fifty-six".