881117680 has 40 divisors (see below), whose sum is σ = 2053832832. Its totient is φ = 351546624.

The previous prime is 881117663. The next prime is 881117707. The reversal of 881117680 is 86711188.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17889 + ... + 45631.

Almost surely, 2^881117680 is an apocalyptic number.

881117680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

881117680 is an abundant number, since it is smaller than the sum of its proper divisors (1172715152).

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

881117680 is a wasteful number, since it uses less digits than its factorization.

881117680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28153 (or 28147 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 40.

The square root of 881117680 is about 29683.6264630857. The cubic root of 881117680 is about 958.6895023607.

The spelling of 881117680 in words is "eight hundred eighty-one million, one hundred seventeen thousand, six hundred eighty".