64315291 has 6 divisors (see below), whose sum is σ = 67233740. Its totient is φ = 61518468.

The previous prime is 64315283. The next prime is 64315313. The reversal of 64315291 is 19251346.

It is not a de Polignac number, because 64315291 - 2³ = 64315283 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (64315201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60261 + ... + 61318.

Almost surely, 2^64315291 is an apocalyptic number.

64315291 is a deficient number, since it is larger than the sum of its proper divisors (2918449).

64315291 is a wasteful number, since it uses less digits than its factorization.

64315291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121625 (or 121602 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 64315291 is about 8019.6814774653. The cubic root of 64315291 is about 400.6557805422.

The spelling of 64315291 in words is "sixty-four million, three hundred fifteen thousand, two hundred ninety-one".