64514015 has 4 divisors (see below), whose sum is σ = 77416824. Its totient is φ = 51611208.

The previous prime is 64513979. The next prime is 64514029. The reversal of 64514015 is 51041546.

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 64514015 - 2¹⁰ = 64512991 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 3 ways as a sum of consecutive naturals, for example, 6451397 + ... + 6451406.

It is an arithmetic number, because the mean of its divisors is an integer number (19354206).

Almost surely, 2^64514015 is an apocalyptic number.

64514015 is a deficient number, since it is larger than the sum of its proper divisors (12902809).

64514015 is a wasteful number, since it uses less digits than its factorization.

64514015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12902808.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 64514015 is about 8032.0616905001. The cubic root of 64514015 is about 401.0680104297.

The spelling of 64514015 in words is "sixty-four million, five hundred fourteen thousand, fifteen".