870688420 has 24 divisors (see below), whose sum is σ = 2089652544. Its totient is φ = 298521696.

The previous prime is 870688417. The next prime is 870688421. The reversal of 870688420 is 24886078.

It is not an unprimeable number, because it can be changed into a prime (870688421) 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, 3109462 + ... + 3109741.

It is an arithmetic number, because the mean of its divisors is an integer number (87068856).

Almost surely, 2^870688420 is an apocalyptic number.

It is an amenable number.

870688420 is an abundant number, since it is smaller than the sum of its proper divisors (1218964124).

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

870688420 is a wasteful number, since it uses less digits than its factorization.

870688420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6219219 (or 6219217 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 870688420 is about 29507.4299118036. The cubic root of 870688420 is about 954.8920028090.

The spelling of 870688420 in words is "eight hundred seventy million, six hundred eighty-eight thousand, four hundred twenty".