45640064 has 16 divisors (see below), whose sum is σ = 90923820. Its totient is φ = 22819968.

The previous prime is 45640051. The next prime is 45640069. The reversal of 45640064 is 46004654.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45640069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178154 + ... + 178409.

Almost surely, 2^45640064 is an apocalyptic number.

It is an amenable number.

45640064 is a deficient number, since it is larger than the sum of its proper divisors (45283756).

45640064 is an equidigital number, since it uses as much as digits as its factorization.

45640064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356577 (or 356565 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 45640064 is about 6755.7430383341. The cubic root of 45640064 is about 357.3677969780.

The spelling of 45640064 in words is "forty-five million, six hundred forty thousand, sixty-four".