971686044 has 72 divisors (see below), whose sum is σ = 2911079808. Its totient is φ = 277622640.

The previous prime is 971686043. The next prime is 971686061. The reversal of 971686044 is 440686179.

971686044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971686043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64602 + ... + 78209.

It is an arithmetic number, because the mean of its divisors is an integer number (40431664).

Almost surely, 2^971686044 is an apocalyptic number.

It is an amenable number.

971686044 is an abundant number, since it is smaller than the sum of its proper divisors (1939393764).

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

971686044 is a wasteful number, since it uses less digits than its factorization.

971686044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142837 (or 142823 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 971686044 is about 31171.8790578945. The cubic root of 971686044 is about 990.4715109333.

The spelling of 971686044 in words is "nine hundred seventy-one million, six hundred eighty-six thousand, forty-four".