64442744 has 32 divisors (see below), whose sum is σ = 123379200. Its totient is φ = 31548000.

The previous prime is 64442743. The next prime is 64442759. The reversal of 64442744 is 44724446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64442743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134297 + ... + 134775.

It is an arithmetic number, because the mean of its divisors is an integer number (3855600).

Almost surely, 2^64442744 is an apocalyptic number.

It is an amenable number.

64442744 is a deficient number, since it is larger than the sum of its proper divisors (58936456).

64442744 is a wasteful number, since it uses less digits than its factorization.

64442744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 799 counting only the distinct ones).

The product of its digits is 86016, while the sum is 35.

The square root of 64442744 is about 8027.6238078276. The cubic root of 64442744 is about 400.9202644928.

The spelling of 64442744 in words is "sixty-four million, four hundred forty-two thousand, seven hundred forty-four".