66131169 has 8 divisors (see below), whose sum is σ = 94957632. Its totient is φ = 40696080.

The previous prime is 66131161. The next prime is 66131171. The reversal of 66131169 is 96113166.

66131169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66131169 - 2³ = 66131161 is a prime.

It is a super-2 number, since 2×66131169² = 8746663026613122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66131161) 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 7 ways as a sum of consecutive naturals, for example, 847797 + ... + 847874.

It is an arithmetic number, because the mean of its divisors is an integer number (11869704).

Almost surely, 2^66131169 is an apocalyptic number.

It is an amenable number.

66131169 is a deficient number, since it is larger than the sum of its proper divisors (28826463).

66131169 is a wasteful number, since it uses less digits than its factorization.

66131169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695687.

The product of its digits is 5832, while the sum is 33.

The square root of 66131169 is about 8132.1072914713. The cubic root of 66131169 is about 404.3915448066.

The spelling of 66131169 in words is "sixty-six million, one hundred thirty-one thousand, one hundred sixty-nine".