64275744 has 48 divisors (see below), whose sum is σ = 181706112. Its totient is φ = 19776768.

The previous prime is 64275737. The next prime is 64275749. The reversal of 64275744 is 44757246.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (64275749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24504 + ... + 26999.

It is an arithmetic number, because the mean of its divisors is an integer number (3785544).

Almost surely, 2^64275744 is an apocalyptic number.

It is an amenable number.

64275744 is an abundant number, since it is smaller than the sum of its proper divisors (117430368).

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

64275744 is a wasteful number, since it uses less digits than its factorization.

64275744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51529 (or 51521 counting only the distinct ones).

The product of its digits is 188160, while the sum is 39.

The square root of 64275744 is about 8017.2154767101. The cubic root of 64275744 is about 400.5736436059.

The spelling of 64275744 in words is "sixty-four million, two hundred seventy-five thousand, seven hundred forty-four".