66298250 has 16 divisors (see below), whose sum is σ = 124110792. Its totient is φ = 26519200.

The previous prime is 66298237. The next prime is 66298261. The reversal of 66298250 is 5289266.

It can be written as a sum of positive squares in 4 ways, for example, as 4879681 + 61418569 = 2209^2 + 7837^2 .

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, 132347 + ... + 132846.

Almost surely, 2^66298250 is an apocalyptic number.

66298250 is a deficient number, since it is larger than the sum of its proper divisors (57812542).

66298250 is a wasteful number, since it uses less digits than its factorization.

66298250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265210 (or 265200 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 66298250 is about 8142.3737325181. The cubic root of 66298250 is about 404.7318246993.

The spelling of 66298250 in words is "sixty-six million, two hundred ninety-eight thousand, two hundred fifty".