870660408 has 32 divisors (see below), whose sum is σ = 2291212800. Its totient is φ = 274945248.

The previous prime is 870660337. The next prime is 870660409. The reversal of 870660408 is 804066078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870660409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954216 + ... + 955127.

It is an arithmetic number, because the mean of its divisors is an integer number (71600400).

Almost surely, 2^870660408 is an apocalyptic number.

It is an amenable number.

870660408 is an abundant number, since it is smaller than the sum of its proper divisors (1420552392).

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

870660408 is a wasteful number, since it uses less digits than its factorization.

870660408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909371 (or 1909367 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 870660408 is about 29506.9552478733. The cubic root of 870660408 is about 954.8817623598.

The spelling of 870660408 in words is "eight hundred seventy million, six hundred sixty thousand, four hundred eight".