64383775 has 6 divisors (see below), whose sum is σ = 79835912. Its totient is φ = 51507000.

The previous prime is 64383773. The next prime is 64383797. The reversal of 64383775 is 57738346.

It is not a de Polignac number, because 64383775 - 2¹ = 64383773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64383773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1287651 + ... + 1287700.

Almost surely, 2^64383775 is an apocalyptic number.

64383775 is a deficient number, since it is larger than the sum of its proper divisors (15452137).

64383775 is a wasteful number, since it uses less digits than its factorization.

64383775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575361 (or 2575356 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The square root of 64383775 is about 8023.9500870830. The cubic root of 64383775 is about 400.7979384272.

The spelling of 64383775 in words is "sixty-four million, three hundred eighty-three thousand, seven hundred seventy-five".