64005015 has 16 divisors (see below), whose sum is σ = 107798400. Its totient is φ = 32339232.

The previous prime is 64004989. The next prime is 64005031. The reversal of 64005015 is 51050046.

It is a happy number.

It is not a de Polignac number, because 64005015 - 2⁹ = 64004503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64004982 and 64005000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112005 + ... + 112574.

It is an arithmetic number, because the mean of its divisors is an integer number (6737400).

Almost surely, 2^64005015 is an apocalyptic number.

64005015 is a deficient number, since it is larger than the sum of its proper divisors (43793385).

64005015 is a wasteful number, since it uses less digits than its factorization.

64005015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224606.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 64005015 is about 8000.3134313600. The cubic root of 64005015 is about 400.0104476438.

The spelling of 64005015 in words is "sixty-four million, five thousand, fifteen".