85650644 has 24 divisors (see below), whose sum is σ = 155291136. Its totient is φ = 41292000.

The previous prime is 85650629. The next prime is 85650661. The reversal of 85650644 is 44605658.

It is a super-2 number, since 2×85650644² = 14672065635229472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85650598 and 85650607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37454 + ... + 39674.

It is an arithmetic number, because the mean of its divisors is an integer number (6470464).

Almost surely, 2^85650644 is an apocalyptic number.

It is an amenable number.

85650644 is a deficient number, since it is larger than the sum of its proper divisors (69640492).

85650644 is a wasteful number, since it uses less digits than its factorization.

85650644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 85650644 is about 9254.7633140994. The cubic root of 85650644 is about 440.8019877425.

The spelling of 85650644 in words is "eighty-five million, six hundred fifty thousand, six hundred forty-four".