85881964 has 24 divisors (see below), whose sum is σ = 172040960. Its totient is φ = 36747216.

The previous prime is 85881949. The next prime is 85881967. The reversal of 85881964 is 46918858.

It is not an unprimeable number, because it can be changed into a prime (85881967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18247 + ... + 22465.

Almost surely, 2^85881964 is an apocalyptic number.

It is an amenable number.

85881964 is an abundant number, since it is smaller than the sum of its proper divisors (86158996).

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

85881964 is a wasteful number, since it uses less digits than its factorization.

85881964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957 (or 4955 counting only the distinct ones).

The product of its digits is 552960, while the sum is 49.

The square root of 85881964 is about 9267.2522356953. The cubic root of 85881964 is about 441.1984613464.

The spelling of 85881964 in words is "eighty-five million, eight hundred eighty-one thousand, nine hundred sixty-four".