660332198 has 16 divisors (see below), whose sum is σ = 1008067920. Its totient is φ = 324324000.

The previous prime is 660332171. The next prime is 660332201. The reversal of 660332198 is 891233066.

It is a super-2 number, since 2×660332198² = 872077223431022408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101648 + ... + 107948.

It is an arithmetic number, because the mean of its divisors is an integer number (63004245).

Almost surely, 2^660332198 is an apocalyptic number.

660332198 is a deficient number, since it is larger than the sum of its proper divisors (347735722).

660332198 is a wasteful number, since it uses less digits than its factorization.

660332198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7223.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 660332198 is about 25696.9297387840. The cubic root of 660332198 is about 870.8048209300.

The spelling of 660332198 in words is "six hundred sixty million, three hundred thirty-two thousand, one hundred ninety-eight".