64613375 has 8 divisors (see below), whose sum is σ = 80637648. Its totient is φ = 51690600.

The previous prime is 64613327. The next prime is 64613387. The reversal of 64613375 is 57331646.

It is not a de Polignac number, because 64613375 - 2²⁰ = 63564799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258329 + ... + 258578.

It is an arithmetic number, because the mean of its divisors is an integer number (10079706).

Almost surely, 2^64613375 is an apocalyptic number.

64613375 is a deficient number, since it is larger than the sum of its proper divisors (16024273).

64613375 is an equidigital number, since it uses as much as digits as its factorization.

64613375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516922 (or 516912 counting only the distinct ones).

The product of its digits is 45360, while the sum is 35.

The square root of 64613375 is about 8038.2445222822. The cubic root of 64613375 is about 401.2738038369.

The spelling of 64613375 in words is "sixty-four million, six hundred thirteen thousand, three hundred seventy-five".