43625664 has 168 divisors, whose sum is σ = 135514080. Its totient is φ = 13381632.

The previous prime is 43625663. The next prime is 43625669. The reversal of 43625664 is 46652634.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (43625663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 490132 + ... + 490220.

Almost surely, 2^43625664 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 43625664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67757040).

43625664 is an abundant number, since it is smaller than the sum of its proper divisors (91888416).

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

43625664 is a wasteful number, since it uses less digits than its factorization.

43625664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 154 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 43625664 is about 6604.9726721615. The cubic root of 43625664 is about 352.0308168612.

The spelling of 43625664 in words is "forty-three million, six hundred twenty-five thousand, six hundred sixty-four".