45443664 has 60 divisors (see below), whose sum is σ = 145350816. Its totient is φ = 12983616.

The previous prime is 45443663. The next prime is 45443681. The reversal of 45443664 is 46634454.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45443663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21534 + ... + 23549.

Almost surely, 2^45443664 is an apocalyptic number.

It is an amenable number.

45443664 is an abundant number, since it is smaller than the sum of its proper divisors (99907152).

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

45443664 is a wasteful number, since it uses less digits than its factorization.

45443664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45104 (or 45095 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 45443664 is about 6741.1915860625. The cubic root of 45443664 is about 356.8544471731.

The spelling of 45443664 in words is "forty-five million, four hundred forty-three thousand, six hundred sixty-four".