8427864 has 32 divisors (see below), whose sum is σ = 21798000. Its totient is φ = 2712192.

The previous prime is 8427851. The next prime is 8427907. The reversal of 8427864 is 4687248.

It is a congruent number.

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, 5359 + ... + 6750.

Almost surely, 2^8427864 is an apocalyptic number.

It is an amenable number.

8427864 is an abundant number, since it is smaller than the sum of its proper divisors (13370136).

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

8427864 is a wasteful number, since it uses less digits than its factorization.

8427864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12147 (or 12143 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 8427864 is about 2903.0783661486. The cubic root of 8427864 is about 203.5037920842.

The spelling of 8427864 in words is "eight million, four hundred twenty-seven thousand, eight hundred sixty-four".