64520514 has 24 divisors (see below), whose sum is σ = 141036012. Its totient is φ = 21315840.

The previous prime is 64520509. The next prime is 64520537. The reversal of 64520514 is 41502546.

64520514 is a `hidden beast` number, since 645 + 2 + 0 + 5 + 14 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41796225 + 22724289 = 6465^2 + 4767^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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, 13827 + ... + 17894.

Almost surely, 2^64520514 is an apocalyptic number.

64520514 is an abundant number, since it is smaller than the sum of its proper divisors (76515498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64520514 is a wasteful number, since it uses less digits than its factorization.

64520514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31842 (or 31839 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 64520514 is about 8032.4662464277. The cubic root of 64520514 is about 401.0814775473.

The spelling of 64520514 in words is "sixty-four million, five hundred twenty thousand, five hundred fourteen".