45731664 has 60 divisors (see below), whose sum is σ = 139624992. Its totient is φ = 13857600.

The previous prime is 45731663. The next prime is 45731669. The reversal of 45731664 is 46613754.

It is a happy number.

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 (45731663) 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, 12852 + ... + 16019.

Almost surely, 2^45731664 is an apocalyptic number.

45731664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

45731664 is an abundant number, since it is smaller than the sum of its proper divisors (93893328).

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

45731664 is a wasteful number, since it uses less digits than its factorization.

45731664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28896 (or 28887 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 45731664 is about 6762.5190572744. The cubic root of 45731664 is about 357.6067172890.

The spelling of 45731664 in words is "forty-five million, seven hundred thirty-one thousand, six hundred sixty-four".