66165141 has 12 divisors (see below), whose sum is σ = 102623712. Its totient is φ = 37808568.

The previous prime is 66165133. The next prime is 66165149. The reversal of 66165141 is 14156166.

It is an interprime number because it is at equal distance from previous prime (66165133) and next prime (66165149).

It is not a de Polignac number, because 66165141 - 2³ = 66165133 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66165099 and 66165108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66165149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224905 + ... + 225198.

It is an arithmetic number, because the mean of its divisors is an integer number (8551976).

Almost surely, 2^66165141 is an apocalyptic number.

It is an amenable number.

66165141 is a deficient number, since it is larger than the sum of its proper divisors (36458571).

66165141 is a wasteful number, since it uses less digits than its factorization.

66165141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450120 (or 450113 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 66165141 is about 8134.1957807764. The cubic root of 66165141 is about 404.4607791178.

The spelling of 66165141 in words is "sixty-six million, one hundred sixty-five thousand, one hundred forty-one".