85199644 has 12 divisors (see below), whose sum is σ = 149346904. Its totient is φ = 42529104.

The previous prime is 85199623. The next prime is 85199663. The reversal of 85199644 is 44699158.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 85199594 and 85199603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14922 + ... + 19825.

Almost surely, 2^85199644 is an apocalyptic number.

It is an amenable number.

85199644 is a deficient number, since it is larger than the sum of its proper divisors (64147260).

85199644 is a wasteful number, since it uses less digits than its factorization.

85199644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35364 (or 35362 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 85199644 is about 9230.3653232145. The cubic root of 85199644 is about 440.0269336130.

The spelling of 85199644 in words is "eighty-five million, one hundred ninety-nine thousand, six hundred forty-four".