877906985 has 8 divisors (see below), whose sum is σ = 1054005696. Its totient is φ = 701980720.

The previous prime is 877906973. The next prime is 877906993. The reversal of 877906985 is 589609778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 877906985 - 2⁴ = 877906969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31631 + ... + 52500.

It is an arithmetic number, because the mean of its divisors is an integer number (131750712).

Almost surely, 2^877906985 is an apocalyptic number.

It is an amenable number.

877906985 is a deficient number, since it is larger than the sum of its proper divisors (176098711).

877906985 is a wasteful number, since it uses less digits than its factorization.

877906985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86223.

The product of its (nonzero) digits is 7620480, while the sum is 59.

The square root of 877906985 is about 29629.4951863848. The cubic root of 877906985 is about 957.5236324090.

The spelling of 877906985 in words is "eight hundred seventy-seven million, nine hundred six thousand, nine hundred eighty-five".