66181282 has 8 divisors (see below), whose sum is σ = 99309852. Its totient is φ = 33078000.

The previous prime is 66181267. The next prime is 66181307. The reversal of 66181282 is 28218166.

It can be written as a sum of positive squares in 2 ways, for example, as 66113161 + 68121 = 8131^2 + 261^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2932 + ... + 11872.

Almost surely, 2^66181282 is an apocalyptic number.

66181282 is a deficient number, since it is larger than the sum of its proper divisors (33128570).

66181282 is a wasteful number, since it uses less digits than its factorization.

66181282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12644.

The product of its digits is 9216, while the sum is 34.

The square root of 66181282 is about 8135.1878896557. The cubic root of 66181282 is about 404.4936658743.

The spelling of 66181282 in words is "sixty-six million, one hundred eighty-one thousand, two hundred eighty-two".