870634880 has 32 divisors (see below), whose sum is σ = 2081363040. Its totient is φ = 348253696.

The previous prime is 870634879. The next prime is 870634931. The reversal of 870634880 is 88436078.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×870634880² = 1516010188545228800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679544 + ... + 680823.

It is an arithmetic number, because the mean of its divisors is an integer number (65042595).

Almost surely, 2^870634880 is an apocalyptic number.

870634880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

870634880 is an abundant number, since it is smaller than the sum of its proper divisors (1210728160).

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

870634880 is a wasteful number, since it uses less digits than its factorization.

870634880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360386 (or 1360374 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 870634880 is about 29506.5226687253. The cubic root of 870634880 is about 954.8724298042.

The spelling of 870634880 in words is "eight hundred seventy million, six hundred thirty-four thousand, eight hundred eighty".