66044169 has 6 divisors (see below), whose sum is σ = 95397146. Its totient is φ = 44029440.

The previous prime is 66044159. The next prime is 66044183. The reversal of 66044169 is 96144066.

66044169 is a `hidden beast` number, since 6 + 604 + 41 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43718544 + 22325625 = 6612^2 + 4725^2 .

It is a de Polignac number, because none of the positive numbers 2^k-66044169 is a prime.

It is a super-2 number, since 2×66044169² = 8723664517801122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66044119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3669112 + ... + 3669129.

Almost surely, 2^66044169 is an apocalyptic number.

It is an amenable number.

66044169 is a deficient number, since it is larger than the sum of its proper divisors (29352977).

66044169 is a wasteful number, since it uses less digits than its factorization.

66044169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7338247 (or 7338244 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 66044169 is about 8126.7563640114. The cubic root of 66044169 is about 404.2141322273.

The spelling of 66044169 in words is "sixty-six million, forty-four thousand, one hundred sixty-nine".