870055680 has 288 divisors, whose sum is σ = 3100829760. Its totient is φ = 206438400.

The previous prime is 870055673. The next prime is 870055721. The reversal of 870055680 is 86550078.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1447380 + ... + 1447980.

It is an arithmetic number, because the mean of its divisors is an integer number (10766770).

Almost surely, 2^870055680 is an apocalyptic number.

870055680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870055680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1550414880).

870055680 is an abundant number, since it is smaller than the sum of its proper divisors (2230774080).

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

870055680 is a wasteful number, since it uses less digits than its factorization.

870055680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 870055680 is about 29496.7062568009. The cubic root of 870055680 is about 954.6606361607.

The spelling of 870055680 in words is "eight hundred seventy million, fifty-five thousand, six hundred eighty".