9870864 has 40 divisors (see below), whose sum is σ = 26611392. Its totient is φ = 3146880.

The previous prime is 9870859. The next prime is 9870871. The reversal of 9870864 is 4680789.

It is a happy number.

It is a super-2 number, since 2×9870864² = 194867912212992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3367 + ... + 5574.

Almost surely, 2^9870864 is an apocalyptic number.

It is an amenable number.

9870864 is an abundant number, since it is smaller than the sum of its proper divisors (16740528).

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

9870864 is a wasteful number, since it uses less digits than its factorization.

9870864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8975 (or 8969 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 9870864 is about 3141.7931185869. The cubic root of 9870864 is about 214.5120645677.

The spelling of 9870864 in words is "nine million, eight hundred seventy thousand, eight hundred sixty-four".