66035994 has 16 divisors (see below), whose sum is σ = 135293760. Its totient is φ = 21475040.

The previous prime is 66035993. The next prime is 66035999. The reversal of 66035994 is 49953066.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66035993) 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, 133974 + ... + 134465.

It is an arithmetic number, because the mean of its divisors is an integer number (8455860).

Almost surely, 2^66035994 is an apocalyptic number.

66035994 is an abundant number, since it is smaller than the sum of its proper divisors (69257766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66035994 is a wasteful number, since it uses less digits than its factorization.

66035994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268485.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 66035994 is about 8126.2533802485. The cubic root of 66035994 is about 404.1974535563.

The spelling of 66035994 in words is "sixty-six million, thirty-five thousand, nine hundred ninety-four".