66074699 has 16 divisors (see below), whose sum is σ = 73363968. Its totient is φ = 59190912.

The previous prime is 66074693. The next prime is 66074707. The reversal of 66074699 is 99647066.

66074699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 66074699 - 2⁴ = 66074683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66074693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135434 + ... + 135920.

It is an arithmetic number, because the mean of its divisors is an integer number (4585248).

Almost surely, 2^66074699 is an apocalyptic number.

66074699 is a deficient number, since it is larger than the sum of its proper divisors (7289269).

66074699 is a wasteful number, since it uses less digits than its factorization.

66074699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 66074699 is about 8128.6345101745. The cubic root of 66074699 is about 404.2764075024.

The spelling of 66074699 in words is "sixty-six million, seventy-four thousand, six hundred ninety-nine".