43868664 has 48 divisors (see below), whose sum is σ = 135785520. Its totient is φ = 12533760.

The previous prime is 43868651. The next prime is 43868681. The reversal of 43868664 is 46686834.

It is a super-2 number, since 2×43868664² = 3848919362289792, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43017 + ... + 44024.

It is an arithmetic number, because the mean of its divisors is an integer number (2828865).

Almost surely, 2^43868664 is an apocalyptic number.

It is an amenable number.

43868664 is an abundant number, since it is smaller than the sum of its proper divisors (91916856).

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

43868664 is a wasteful number, since it uses less digits than its factorization.

43868664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87060 (or 87053 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 43868664 is about 6623.3423586585. The cubic root of 43868664 is about 352.6832244985.

The spelling of 43868664 in words is "forty-three million, eight hundred sixty-eight thousand, six hundred sixty-four".