877130865 has 24 divisors (see below), whose sum is σ = 1637312040. Its totient is φ = 431817984.

The previous prime is 877130857. The next prime is 877130893. The reversal of 877130865 is 568031778.

It can be written as a sum of positive squares in 4 ways, for example, as 23409 + 877107456 = 153^2 + 29616^2 .

It is not a de Polignac number, because 877130865 - 2³ = 877130857 is a prime.

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 877130865.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 749100 + ... + 750269.

It is an arithmetic number, because the mean of its divisors is an integer number (68221335).

Almost surely, 2^877130865 is an apocalyptic number.

It is an amenable number.

877130865 is a deficient number, since it is larger than the sum of its proper divisors (760181175).

877130865 is a wasteful number, since it uses less digits than its factorization.

877130865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499393 (or 1499390 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 877130865 is about 29616.3952060341. The cubic root of 877130865 is about 957.2413806600.

The spelling of 877130865 in words is "eight hundred seventy-seven million, one hundred thirty thousand, eight hundred sixty-five".