64867315 has 4 divisors (see below), whose sum is σ = 77840784. Its totient is φ = 51893848.

The previous prime is 64867307. The next prime is 64867321. The reversal of 64867315 is 51376846.

It is a happy number.

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 64867315 - 2³ = 64867307 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6486727 + ... + 6486736.

It is an arithmetic number, because the mean of its divisors is an integer number (19460196).

Almost surely, 2^64867315 is an apocalyptic number.

64867315 is a deficient number, since it is larger than the sum of its proper divisors (12973469).

64867315 is a wasteful number, since it uses less digits than its factorization.

64867315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12973468.

The product of its digits is 120960, while the sum is 40.

The square root of 64867315 is about 8054.0247702624. The cubic root of 64867315 is about 401.7988048767.

The spelling of 64867315 in words is "sixty-four million, eight hundred sixty-seven thousand, three hundred fifteen".