64315933 has 4 divisors (see below), whose sum is σ = 70162848. Its totient is φ = 58469020.

The previous prime is 64315897. The next prime is 64315943. The reversal of 64315933 is 33951346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64315933 - 2²¹ = 62218781 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 (64315943) 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, 2923441 + ... + 2923462.

It is an arithmetic number, because the mean of its divisors is an integer number (17540712).

Almost surely, 2^64315933 is an apocalyptic number.

It is an amenable number.

64315933 is a deficient number, since it is larger than the sum of its proper divisors (5846915).

64315933 is a wasteful number, since it uses less digits than its factorization.

64315933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846914.

The product of its digits is 29160, while the sum is 34.

The square root of 64315933 is about 8019.7215038928. The cubic root of 64315933 is about 400.6571136630.

The spelling of 64315933 in words is "sixty-four million, three hundred fifteen thousand, nine hundred thirty-three".