66330499 has 4 divisors (see below), whose sum is σ = 66364200. Its totient is φ = 66296800.

The previous prime is 66330487. The next prime is 66330503. The reversal of 66330499 is 99403366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66330499 - 2⁷ = 66330371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66330599) 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, 13702 + ... + 17899.

It is an arithmetic number, because the mean of its divisors is an integer number (16591050).

Almost surely, 2^66330499 is an apocalyptic number.

66330499 is a deficient number, since it is larger than the sum of its proper divisors (33701).

66330499 is a wasteful number, since it uses less digits than its factorization.

66330499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33700.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 66330499 is about 8144.3538110767. The cubic root of 66330499 is about 404.7974376976.

The spelling of 66330499 in words is "sixty-six million, three hundred thirty thousand, four hundred ninety-nine".