66004769 has 16 divisors (see below), whose sum is σ = 69144192. Its totient is φ = 62969088.

The previous prime is 66004753. The next prime is 66004787. The reversal of 66004769 is 96740066.

It is not a de Polignac number, because 66004769 - 2⁴ = 66004753 is a prime.

It is a super-2 number, since 2×66004769² = 8713259061486722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66004709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 584057 + ... + 584169.

It is an arithmetic number, because the mean of its divisors is an integer number (4321512).

Almost surely, 2^66004769 is an apocalyptic number.

It is an amenable number.

66004769 is a deficient number, since it is larger than the sum of its proper divisors (3139423).

66004769 is a wasteful number, since it uses less digits than its factorization.

66004769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 66004769 is about 8124.3319109943. The cubic root of 66004769 is about 404.1337355013.

The spelling of 66004769 in words is "sixty-six million, four thousand, seven hundred sixty-nine".