872523877 has 4 divisors (see below), whose sum is σ = 872607340. Its totient is φ = 872440416.

The previous prime is 872523863. The next prime is 872523881. The reversal of 872523877 is 778325278.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 152621316 + 719902561 = 12354^2 + 26831^2 .

It is a cyclic number.

It is not a de Polignac number, because 872523877 - 2²³ = 864135269 is a prime.

It is a super-2 number, since 2×872523877² = 1522595831870222258, which contains 22 as substring.

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 872523877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872623877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23352 + ... + 47857.

It is an arithmetic number, because the mean of its divisors is an integer number (218151835).

Almost surely, 2^872523877 is an apocalyptic number.

It is an amenable number.

872523877 is a deficient number, since it is larger than the sum of its proper divisors (83463).

872523877 is a wasteful number, since it uses less digits than its factorization.

872523877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83462.

The product of its digits is 1317120, while the sum is 49.

The square root of 872523877 is about 29538.5151454842. The cubic root of 872523877 is about 955.5625193957.

The spelling of 872523877 in words is "eight hundred seventy-two million, five hundred twenty-three thousand, eight hundred seventy-seven".