64808475 has 48 divisors (see below), whose sum is σ = 112492800. Its totient is φ = 32878720.

The previous prime is 64808473. The next prime is 64808489. The reversal of 64808475 is 57480846.

It is not a de Polignac number, because 64808475 - 2¹ = 64808473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64808473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 180346 + ... + 180704.

It is an arithmetic number, because the mean of its divisors is an integer number (2343600).

Almost surely, 2^64808475 is an apocalyptic number.

64808475 is a deficient number, since it is larger than the sum of its proper divisors (47684325).

64808475 is a wasteful number, since it uses less digits than its factorization.

64808475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 64808475 is about 8050.3711094582. The cubic root of 64808475 is about 401.6772799164.

The spelling of 64808475 in words is "sixty-four million, eight hundred eight thousand, four hundred seventy-five".