870488 has 16 divisors (see below), whose sum is σ = 1642680. Its totient is φ = 432448.

The previous prime is 870479. The next prime is 870491. The reversal of 870488 is 884078.

It is a Cunningham number, because it is equal to 933²-1.

It is a congruent number.

It is an unprimeable number.

870488 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631 + ... + 2097.

2⁸⁷⁰⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

870488 is a deficient number, since it is larger than the sum of its proper divisors (772192).

870488 is a wasteful number, since it uses less digits than its factorization.

870488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 870488 is about 932.9994640942. Note that the first 3 decimals coincide. The cubic root of 870488 is about 95.4818729700.

The spelling of 870488 in words is "eight hundred seventy thousand, four hundred eighty-eight".