64045644 has 48 divisors (see below), whose sum is σ = 161441280. Its totient is φ = 19644480.

The previous prime is 64045609. The next prime is 64045651. The reversal of 64045644 is 44654046.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 88717 + ... + 89435.

It is an arithmetic number, because the mean of its divisors is an integer number (3363360).

Almost surely, 2^64045644 is an apocalyptic number.

It is an amenable number.

64045644 is an abundant number, since it is smaller than the sum of its proper divisors (97395636).

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

64045644 is a wasteful number, since it uses less digits than its factorization.

64045644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 64045644 is about 8002.8522415449. The cubic root of 64045644 is about 400.0950690696.

The spelling of 64045644 in words is "sixty-four million, forty-five thousand, six hundred forty-four".