66185142 has 8 divisors (see below), whose sum is σ = 132370296. Its totient is φ = 22061712.

The previous prime is 66185101. The next prime is 66185143. The reversal of 66185142 is 24158166.

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

66185142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66185143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5515423 + ... + 5515434.

It is an arithmetic number, because the mean of its divisors is an integer number (16546287).

Almost surely, 2^66185142 is an apocalyptic number.

66185142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66185142 is a wasteful number, since it uses less digits than its factorization.

66185142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11030862.

The product of its digits is 11520, while the sum is 33.

The square root of 66185142 is about 8135.4251271830. The cubic root of 66185142 is about 404.5015297050.

The spelling of 66185142 in words is "sixty-six million, one hundred eighty-five thousand, one hundred forty-two".