64534375 has 24 divisors (see below), whose sum is σ = 81838512. Its totient is φ = 50880000.

The previous prime is 64534373. The next prime is 64534387. The reversal of 64534375 is 57343546.

It is not a de Polignac number, because 64534375 - 2¹ = 64534373 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 (64534373) 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 23 ways as a sum of consecutive naturals, for example, 334279 + ... + 334471.

It is an arithmetic number, because the mean of its divisors is an integer number (3409938).

Almost surely, 2^64534375 is an apocalyptic number.

64534375 is a deficient number, since it is larger than the sum of its proper divisors (17304137).

64534375 is an equidigital number, since it uses as much as digits as its factorization.

64534375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 305 counting only the distinct ones).

The product of its digits is 151200, while the sum is 37.

The square root of 64534375 is about 8033.3290110638. The cubic root of 64534375 is about 401.1101970555.

The spelling of 64534375 in words is "sixty-four million, five hundred thirty-four thousand, three hundred seventy-five".