64015 has 16 divisors (see below), whose sum is σ = 92160. Its totient is φ = 41760.

The previous prime is 64013. The next prime is 64019. The reversal of 64015 is 51046.

64015 = 61² + 62² + ... + 74².

It is not a de Polignac number, because 64015 - 2¹ = 64013 is a prime.

64015 is a lucky number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 64015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (5760).

2⁶⁴⁰¹⁵ is an apocalyptic number.

64015 is a deficient number, since it is larger than the sum of its proper divisors (28145).

64015 is a wasteful number, since it uses less digits than its factorization.

64015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 64015 is about 253.0118574296. The cubic root of 64015 is about 40.0031247559.

It can be divided in two parts, 6 and 4015, that multiplied together give a triangular number (24090 = T₂₁₉).

The spelling of 64015 in words is "sixty-four thousand, fifteen".