2972770665 has 32 divisors (see below), whose sum is σ = 4829521536. Its totient is φ = 1561297920.

The previous prime is 2972770663. The next prime is 2972770679. The reversal of 2972770665 is 5660772792.

2972770665 = 5073² + 5074² + ... + 5185².

It is not a de Polignac number, because 2972770665 - 2¹ = 2972770663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2972770663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260530 + ... + 271700.

It is an arithmetic number, because the mean of its divisors is an integer number (150922548).

Almost surely, 2^2972770665 is an apocalyptic number.

It is an amenable number.

2972770665 is a deficient number, since it is larger than the sum of its proper divisors (1856750871).

2972770665 is a wasteful number, since it uses less digits than its factorization.

2972770665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449.

The product of its (nonzero) digits is 2222640, while the sum is 51.

The square root of 2972770665 is about 54523.1204627908. The cubic root of 2972770665 is about 1437.8728020109.

The spelling of 2972770665 in words is "two billion, nine hundred seventy-two million, seven hundred seventy thousand, six hundred sixty-five".