85778656 has 12 divisors (see below), whose sum is σ = 168876792. Its totient is φ = 42889312.

The previous prime is 85778629. The next prime is 85778663. The reversal of 85778656 is 65687758.

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 as a sum of consecutive naturals, namely, 1340260 + ... + 1340323.

It is an arithmetic number, because the mean of its divisors is an integer number (14073066).

Almost surely, 2^85778656 is an apocalyptic number.

It is an amenable number.

85778656 is a deficient number, since it is larger than the sum of its proper divisors (83098136).

85778656 is a wasteful number, since it uses less digits than its factorization.

85778656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680593 (or 2680585 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 52.

The square root of 85778656 is about 9261.6767380426. The cubic root of 85778656 is about 441.0214834857.

The spelling of 85778656 in words is "eighty-five million, seven hundred seventy-eight thousand, six hundred fifty-six".