64475263 has 4 divisors (see below), whose sum is σ = 64835640. Its totient is φ = 64114888.

The previous prime is 64475251. The next prime is 64475273. The reversal of 64475263 is 36257446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64475263 - 2¹³ = 64467071 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 (64475273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179920 + ... + 180277.

It is an arithmetic number, because the mean of its divisors is an integer number (16208910).

Almost surely, 2^64475263 is an apocalyptic number.

64475263 is a deficient number, since it is larger than the sum of its proper divisors (360377).

64475263 is a wasteful number, since it uses less digits than its factorization.

64475263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360376.

The product of its digits is 120960, while the sum is 37.

The square root of 64475263 is about 8029.6489960645. The cubic root of 64475263 is about 400.9876904118.

The spelling of 64475263 in words is "sixty-four million, four hundred seventy-five thousand, two hundred sixty-three".