66132829 has 4 divisors (see below), whose sum is σ = 75580384. Its totient is φ = 56685276.

The previous prime is 66132821. The next prime is 66132929. The reversal of 66132829 is 92823166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66132829 - 2³ = 66132821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66132821) 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, 4723767 + ... + 4723780.

It is an arithmetic number, because the mean of its divisors is an integer number (18895096).

Almost surely, 2^66132829 is an apocalyptic number.

It is an amenable number.

66132829 is a deficient number, since it is larger than the sum of its proper divisors (9447555).

66132829 is an equidigital number, since it uses as much as digits as its factorization.

66132829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9447554.

The product of its digits is 31104, while the sum is 37.

The square root of 66132829 is about 8132.2093553966. The cubic root of 66132829 is about 404.3949284070.

The spelling of 66132829 in words is "sixty-six million, one hundred thirty-two thousand, eight hundred twenty-nine".