64515349 has 4 divisors (see below), whose sum is σ = 65888064. Its totient is φ = 63142636.

The previous prime is 64515313. The next prime is 64515397. The reversal of 64515349 is 94351546.

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 64515349 - 2¹⁷ = 64384277 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 (64515049) 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, 686287 + ... + 686380.

It is an arithmetic number, because the mean of its divisors is an integer number (16472016).

Almost surely, 2^64515349 is an apocalyptic number.

It is an amenable number.

64515349 is a deficient number, since it is larger than the sum of its proper divisors (1372715).

64515349 is a wasteful number, since it uses less digits than its factorization.

64515349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372714.

The product of its digits is 64800, while the sum is 37.

The square root of 64515349 is about 8032.1447322617. The cubic root of 64515349 is about 401.0707747956.

The spelling of 64515349 in words is "sixty-four million, five hundred fifteen thousand, three hundred forty-nine".