877381563 has 16 divisors (see below), whose sum is σ = 1232057600. Its totient is φ = 553845600.

The previous prime is 877381553. The next prime is 877381579. The reversal of 877381563 is 365183778.

It is not a de Polignac number, because 877381563 - 2²⁰ = 876332987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (877381553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174738 + ... + 179688.

It is an arithmetic number, because the mean of its divisors is an integer number (77003600).

Almost surely, 2^877381563 is an apocalyptic number.

877381563 is a deficient number, since it is larger than the sum of its proper divisors (354676037).

877381563 is a wasteful number, since it uses less digits than its factorization.

877381563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082.

The product of its digits is 846720, while the sum is 48.

The square root of 877381563 is about 29620.6273228640. The cubic root of 877381563 is about 957.3325702607.

The spelling of 877381563 in words is "eight hundred seventy-seven million, three hundred eighty-one thousand, five hundred sixty-three".