875745649 has 9 divisors (see below), whose sum is σ = 887531329. Its totient is φ = 864115600.

The previous prime is 875745623. The next prime is 875745679. The reversal of 875745649 is 946547578.

The square root of 875745649 is 29593.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 721191025 + 154554624 = 26855^2 + 12432^2 .

It is not a de Polignac number, because 875745649 - 2⁵ = 875745617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 875745649.

It is not an unprimeable number, because it can be changed into a prime (875745679) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2988747 + ... + 2989039.

Almost surely, 2^875745649 is an apocalyptic number.

875745649 is the 29593-rd square number.

875745649 is the 14797-th centered octagonal number.

It is an amenable number.

875745649 is a deficient number, since it is larger than the sum of its proper divisors (11785680).

875745649 is an frugal number, since it uses more digits than its factorization.

875745649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 394 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 55.

The cubic root of 875745649 is about 956.7372047659.

The spelling of 875745649 in words is "eight hundred seventy-five million, seven hundred forty-five thousand, six hundred forty-nine".