66589330 has 16 divisors (see below), whose sum is σ = 122784984. Its totient is φ = 25985920.

The previous prime is 66589321. The next prime is 66589343. The reversal of 66589330 is 3398566.

It can be written as a sum of positive squares in 4 ways, for example, as 58415449 + 8173881 = 7643^2 + 2859^2 .

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, 80797 + ... + 81616.

Almost surely, 2^66589330 is an apocalyptic number.

66589330 is a deficient number, since it is larger than the sum of its proper divisors (56195654).

66589330 is a wasteful number, since it uses less digits than its factorization.

66589330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162461.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 66589330 is about 8160.2285507209. The cubic root of 66589330 is about 405.3232799607.

The spelling of 66589330 in words is "sixty-six million, five hundred eighty-nine thousand, three hundred thirty".