66182157 has 16 divisors (see below), whose sum is σ = 100135680. Its totient is φ = 43181856.

The previous prime is 66182141. The next prime is 66182161. The reversal of 66182157 is 75128166.

It is not a de Polignac number, because 66182157 - 2⁴ = 66182141 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66182057) 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, 24808 + ... + 27345.

It is an arithmetic number, because the mean of its divisors is an integer number (6258480).

Almost surely, 2^66182157 is an apocalyptic number.

It is an amenable number.

66182157 is a deficient number, since it is larger than the sum of its proper divisors (33953523).

66182157 is a wasteful number, since it uses less digits than its factorization.

66182157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52209 (or 52203 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 66182157 is about 8135.2416681989. The cubic root of 66182157 is about 404.4954485052.

The spelling of 66182157 in words is "sixty-six million, one hundred eighty-two thousand, one hundred fifty-seven".