971056665 has 24 divisors (see below), whose sum is σ = 1756347840. Its totient is φ = 495379104.

The previous prime is 971056663. The next prime is 971056699. The reversal of 971056665 is 566650179.

It is not a de Polignac number, because 971056665 - 2¹ = 971056663 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 971056665.

It is not an unprimeable number, because it can be changed into a prime (971056663) 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, 468075 + ... + 470144.

It is an arithmetic number, because the mean of its divisors is an integer number (73181160).

Almost surely, 2^971056665 is an apocalyptic number.

It is an amenable number.

971056665 is a deficient number, since it is larger than the sum of its proper divisors (785291175).

971056665 is a wasteful number, since it uses less digits than its factorization.

971056665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938253 (or 938250 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 971056665 is about 31161.7821216952. The cubic root of 971056665 is about 990.2576158474.

The spelling of 971056665 in words is "nine hundred seventy-one million, fifty-six thousand, six hundred sixty-five".