872668745 has 32 divisors (see below), whose sum is σ = 1158571680. Its totient is φ = 627056640.

The previous prime is 872668733. The next prime is 872668747. The reversal of 872668745 is 547866278.

It can be written as a sum of positive squares in 16 ways, for example, as 798571081 + 74097664 = 28259^2 + 8608^2 .

It is not a de Polignac number, because 872668745 - 2⁴ = 872668729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (872668747) 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, 383471 + ... + 385739.

It is an arithmetic number, because the mean of its divisors is an integer number (36205365).

Almost surely, 2^872668745 is an apocalyptic number.

It is an amenable number.

872668745 is a deficient number, since it is larger than the sum of its proper divisors (285902935).

872668745 is a wasteful number, since it uses less digits than its factorization.

872668745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445.

The product of its digits is 4515840, while the sum is 53.

The square root of 872668745 is about 29540.9672319645. The cubic root of 872668745 is about 955.6154015284.

The spelling of 872668745 in words is "eight hundred seventy-two million, six hundred sixty-eight thousand, seven hundred forty-five".