85921956 has 36 divisors (see below), whose sum is σ = 224200704. Its totient is φ = 27716400.

The previous prime is 85921919. The next prime is 85921981. The reversal of 85921956 is 65912958.

85921956 is a `hidden beast` number, since 8 + 592 + 1 + 9 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 37380 + ... + 39611.

Almost surely, 2^85921956 is an apocalyptic number.

It is an amenable number.

85921956 is an abundant number, since it is smaller than the sum of its proper divisors (138278748).

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

85921956 is a wasteful number, since it uses less digits than its factorization.

85921956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77032 (or 77027 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 85921956 is about 9269.4096899425. The cubic root of 85921956 is about 441.2669338947.

The spelling of 85921956 in words is "eighty-five million, nine hundred twenty-one thousand, nine hundred fifty-six".