64213375 has 16 divisors (see below), whose sum is σ = 80904096. Its totient is φ = 50880000.

The previous prime is 64213349. The next prime is 64213379. The reversal of 64213375 is 57331246.

It is not a de Polignac number, because 64213375 - 2⁵ = 64213343 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 (64213379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10975 + ... + 15775.

It is an arithmetic number, because the mean of its divisors is an integer number (5056506).

Almost surely, 2^64213375 is an apocalyptic number.

64213375 is a deficient number, since it is larger than the sum of its proper divisors (16690721).

64213375 is a wasteful number, since it uses less digits than its factorization.

64213375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4923 (or 4913 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 64213375 is about 8013.3248405390. The cubic root of 64213375 is about 400.4440381429. Note that the first 3 decimals are identical.

The spelling of 64213375 in words is "sixty-four million, two hundred thirteen thousand, three hundred seventy-five".