85690944 has 84 divisors (see below), whose sum is σ = 253593600. Its totient is φ = 27636480.

The previous prime is 85690919. The next prime is 85690963. The reversal of 85690944 is 44909658.

It is a happy number.

It is a super-2 number, since 2×85690944² = 14685875767222272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85690944.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15457 + ... + 20255.

Almost surely, 2^85690944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85690944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126796800).

85690944 is an abundant number, since it is smaller than the sum of its proper divisors (167902656).

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

85690944 is a wasteful number, since it uses less digits than its factorization.

85690944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848 (or 4835 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 85690944 is about 9256.9403152446. The cubic root of 85690944 is about 440.8711117011.

The spelling of 85690944 in words is "eighty-five million, six hundred ninety thousand, nine hundred forty-four".