878588881 has 3 divisors (see below), whose sum is σ = 878618523. Its totient is φ = 878559240.

The previous prime is 878588839. The next prime is 878588911. The reversal of 878588881 is 188885878.

The square root of 878588881 is 29641.

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

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 only one way, i.e., 831803281 + 46785600 = 28841^2 + 6840^2 .

It is not a de Polignac number, because 878588881 - 2²⁷ = 744371153 is a prime.

It is a super-2 number, since 2×878588881² = 1543836843633664322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (878588981) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14821 + ... + 44461.

It is an arithmetic number, because the mean of its divisors is an integer number (292872841).

Almost surely, 2^878588881 is an apocalyptic number.

878588881 is the 29641-st square number.

878588881 is the 14821-st centered octagonal number.

It is an amenable number.

878588881 is a deficient number, since it is larger than the sum of its proper divisors (29642).

878588881 is an frugal number, since it uses more digits than its factorization.

878588881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59282 (or 29641 counting only the distinct ones).

The product of its digits is 9175040, while the sum is 61.

The cubic root of 878588881 is about 957.7714804417.

The spelling of 878588881 in words is "eight hundred seventy-eight million, five hundred eighty-eight thousand, eight hundred eighty-one".