64516290 has 16 divisors (see below), whose sum is σ = 154839168. Its totient is φ = 17204336.

The previous prime is 64516273. The next prime is 64516303. The reversal of 64516290 is 9261546.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075242 + ... + 1075301.

It is an arithmetic number, because the mean of its divisors is an integer number (9677448).

Almost surely, 2^64516290 is an apocalyptic number.

64516290 is an abundant number, since it is smaller than the sum of its proper divisors (90322878).

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

64516290 is a wasteful number, since it uses less digits than its factorization.

64516290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150553.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 64516290 is about 8032.2033091799. The cubic root of 64516290 is about 401.0727247490.

The spelling of 64516290 in words is "sixty-four million, five hundred sixteen thousand, two hundred ninety".