64783944 has 48 divisors (see below), whose sum is σ = 175827600. Its totient is φ = 21549024.

The previous prime is 64783937. The next prime is 64783969. The reversal of 64783944 is 44938746.

It is a self number, because there is not a number n which added to its sum of digits gives 64783944.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63067 + ... + 64085.

It is an arithmetic number, because the mean of its divisors is an integer number (3663075).

Almost surely, 2^64783944 is an apocalyptic number.

It is an amenable number.

64783944 is an abundant number, since it is smaller than the sum of its proper divisors (111043656).

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

64783944 is a wasteful number, since it uses less digits than its factorization.

64783944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914 (or 1907 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 64783944 is about 8048.8473708973. The cubic root of 64783944 is about 401.6265931872.

The spelling of 64783944 in words is "sixty-four million, seven hundred eighty-three thousand, nine hundred forty-four".