66132299 has 6 divisors (see below), whose sum is σ = 66448044. Its totient is φ = 65817780.

The previous prime is 66132281. The next prime is 66132307. The reversal of 66132299 is 99223166.

It is not a de Polignac number, because 66132299 - 2²⁰ = 65083723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66132239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134444 + ... + 134934.

It is an arithmetic number, because the mean of its divisors is an integer number (11074674).

Almost surely, 2^66132299 is an apocalyptic number.

66132299 is a deficient number, since it is larger than the sum of its proper divisors (315745).

66132299 is an frugal number, since it uses more digits than its factorization.

66132299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 858 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 66132299 is about 8132.1767688608. The cubic root of 66132299 is about 404.3938481070.

The spelling of 66132299 in words is "sixty-six million, one hundred thirty-two thousand, two hundred ninety-nine".