64473375 has 16 divisors (see below), whose sum is σ = 107284320. Its totient is φ = 34385600.

The previous prime is 64473359. The next prime is 64473379. The reversal of 64473375 is 57337446.

It is not a de Polignac number, because 64473375 - 2⁴ = 64473359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64473379) 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 15 ways as a sum of consecutive naturals, for example, 85590 + ... + 86339.

It is an arithmetic number, because the mean of its divisors is an integer number (6705270).

Almost surely, 2^64473375 is an apocalyptic number.

64473375 is a deficient number, since it is larger than the sum of its proper divisors (42810945).

64473375 is a wasteful number, since it uses less digits than its factorization.

64473375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171947 (or 171937 counting only the distinct ones).

The product of its digits is 211680, while the sum is 39.

The square root of 64473375 is about 8029.5314309118. The cubic root of 64473375 is about 400.9837763931.

The spelling of 64473375 in words is "sixty-four million, four hundred seventy-three thousand, three hundred seventy-five".