64343615 has 12 divisors (see below), whose sum is σ = 89818776. Its totient is φ = 44121168.

The previous prime is 64343603. The next prime is 64343621. The reversal of 64343615 is 51634346.

It is not a de Polignac number, because 64343615 - 2²⁰ = 63295039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131069 + ... + 131558.

It is an arithmetic number, because the mean of its divisors is an integer number (7484898).

Almost surely, 2^64343615 is an apocalyptic number.

64343615 is a deficient number, since it is larger than the sum of its proper divisors (25475161).

64343615 is a wasteful number, since it uses less digits than its factorization.

64343615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262646 (or 262639 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 64343615 is about 8021.4471886312. The cubic root of 64343615 is about 400.7145872358.

The spelling of 64343615 in words is "sixty-four million, three hundred forty-three thousand, six hundred fifteen".