77339856 has 40 divisors (see below), whose sum is σ = 217959264. Its totient is φ = 23436160.

The previous prime is 77339837. The next prime is 77339881. The reversal of 77339856 is 65893377.

It is a super-2 number, since 2×77339856² = 11962906652201472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 72711 + ... + 73766.

Almost surely, 2^77339856 is an apocalyptic number.

It is an amenable number.

77339856 is an abundant number, since it is smaller than the sum of its proper divisors (140619408).

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

77339856 is a wasteful number, since it uses less digits than its factorization.

77339856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146499 (or 146493 counting only the distinct ones).

The product of its digits is 952560, while the sum is 48.

The square root of 77339856 is about 8794.3081592585. The cubic root of 77339856 is about 426.0570797901.

It can be divided in two parts, 77 and 339856, that added together give a palindrome (339933).

The spelling of 77339856 in words is "seventy-seven million, three hundred thirty-nine thousand, eight hundred fifty-six".