877816560 has 80 divisors (see below), whose sum is σ = 2787634080. Its totient is φ = 228372480.

The previous prime is 877816547. The next prime is 877816561. The reversal of 877816560 is 65618778.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (877816561) 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, 34765 + ... + 54444.

It is an arithmetic number, because the mean of its divisors is an integer number (34845426).

Almost surely, 2^877816560 is an apocalyptic number.

877816560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

877816560 is an abundant number, since it is smaller than the sum of its proper divisors (1909817520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

877816560 is a wasteful number, since it uses less digits than its factorization.

877816560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89266 (or 89260 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 877816560 is about 29627.9692182910. The cubic root of 877816560 is about 957.4907560911.

The spelling of 877816560 in words is "eight hundred seventy-seven million, eight hundred sixteen thousand, five hundred sixty".