66132831 has 8 divisors (see below), whose sum is σ = 88460080. Its totient is φ = 43947072.

The previous prime is 66132821. The next prime is 66132929. The reversal of 66132831 is 13823166.

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

It is not a de Polignac number, because 66132831 - 2⁵ = 66132799 is a prime.

It is a super-2 number, since 2×66132831² = 8747102672149122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66132811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34276 + ... + 36153.

It is an arithmetic number, because the mean of its divisors is an integer number (11057510).

Almost surely, 2^66132831 is an apocalyptic number.

66132831 is a deficient number, since it is larger than the sum of its proper divisors (22327249).

66132831 is a wasteful number, since it uses less digits than its factorization.

66132831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70745.

The product of its digits is 5184, while the sum is 30.

The square root of 66132831 is about 8132.2094783644. The cubic root of 66132831 is about 404.3949324836.

Adding to 66132831 its reverse (13823166), we get a palindrome (79955997).

The spelling of 66132831 in words is "sixty-six million, one hundred thirty-two thousand, eight hundred thirty-one".