8971864 has 32 divisors (see below), whose sum is σ = 18786240. Its totient is φ = 3981600.

The previous prime is 8971849. The next prime is 8971873. The reversal of 8971864 is 4681798.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 8971864.

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, 2599 + ... + 4969.

It is an arithmetic number, because the mean of its divisors is an integer number (587070).

Almost surely, 2^8971864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8971864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9393120).

8971864 is an abundant number, since it is smaller than the sum of its proper divisors (9814376).

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

8971864 is a wasteful number, since it uses less digits than its factorization.

8971864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431 (or 2427 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 8971864 is about 2995.3069959522. The cubic root of 8971864 is about 207.7913958895.

The spelling of 8971864 in words is "eight million, nine hundred seventy-one thousand, eight hundred sixty-four".