660868330 has 8 divisors (see below), whose sum is σ = 1189563012. Its totient is φ = 264347328.

The previous prime is 660868321. The next prime is 660868331. The reversal of 660868330 is 33868066.

It can be written as a sum of positive squares in 2 ways, for example, as 659308329 + 1560001 = 25677^2 + 1249^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (660868331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33043407 + ... + 33043426.

Almost surely, 2^660868330 is an apocalyptic number.

660868330 is a deficient number, since it is larger than the sum of its proper divisors (528694682).

660868330 is a wasteful number, since it uses less digits than its factorization.

660868330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66086840.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 660868330 is about 25707.3594521102. The cubic root of 660868330 is about 871.0404296318.

The spelling of 660868330 in words is "six hundred sixty million, eight hundred sixty-eight thousand, three hundred thirty".