66000998 has 16 divisors (see below), whose sum is σ = 113297184. Its totient is φ = 28248000.

The previous prime is 66000997. The next prime is 66001027. The reversal of 66000998 is 89900066.

It is a super-2 number, since 2×66000998² = 8712263473992008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66000997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9248 + ... + 14748.

It is an arithmetic number, because the mean of its divisors is an integer number (7081074).

Almost surely, 2^66000998 is an apocalyptic number.

66000998 is a deficient number, since it is larger than the sum of its proper divisors (47296186).

66000998 is a wasteful number, since it uses less digits than its factorization.

66000998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6367.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 66000998 is about 8124.0998270578. The cubic root of 66000998 is about 404.1260390002.

The spelling of 66000998 in words is "sixty-six million, nine hundred ninety-eight", and thus it is an aban number.