66304250 has 32 divisors (see below), whose sum is σ = 131431248. Its totient is φ = 24960000.

The previous prime is 66304229. The next prime is 66304261. The reversal of 66304250 is 5240366.

It can be written as a sum of positive squares in 8 ways, for example, as 21132409 + 45171841 = 4597^2 + 6721^2 .

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, 3551 + ... + 12050.

Almost surely, 2^66304250 is an apocalyptic number.

66304250 is a deficient number, since it is larger than the sum of its proper divisors (65126998).

66304250 is a wasteful number, since it uses less digits than its factorization.

66304250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15635 (or 15625 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 66304250 is about 8142.7421671081. The cubic root of 66304250 is about 404.7440337581.

The spelling of 66304250 in words is "sixty-six million, three hundred four thousand, two hundred fifty".