66316198 has 16 divisors (see below), whose sum is σ = 108727920. Its totient is φ = 30149856.

The previous prime is 66316189. The next prime is 66316219. The reversal of 66316198 is 89161366.

It is a self number, because there is not a number n which added to its sum of digits gives 66316198.

It is a congruent number.

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, 17293 + ... + 20776.

It is an arithmetic number, because the mean of its divisors is an integer number (6795495).

Almost surely, 2^66316198 is an apocalyptic number.

66316198 is a deficient number, since it is larger than the sum of its proper divisors (42411722).

66316198 is a wasteful number, since it uses less digits than its factorization.

66316198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38151.

The product of its digits is 46656, while the sum is 40.

The square root of 66316198 is about 8143.4757935417. The cubic root of 66316198 is about 404.7683438703.

It can be divided in two parts, 663 and 16198, that added together give a palindrome (16861).

The spelling of 66316198 in words is "sixty-six million, three hundred sixteen thousand, one hundred ninety-eight".