66132899 has 6 divisors (see below), whose sum is σ = 76930164. Its totient is φ = 56685300.

The previous prime is 66132821. The next prime is 66132929. The reversal of 66132899 is 99823166.

It is not a de Polignac number, because 66132899 - 2⁸ = 66132643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66132809) 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, 674777 + ... + 674874.

It is an arithmetic number, because the mean of its divisors is an integer number (12821694).

Almost surely, 2^66132899 is an apocalyptic number.

66132899 is a deficient number, since it is larger than the sum of its proper divisors (10797265).

66132899 is a wasteful number, since it uses less digits than its factorization.

66132899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349665 (or 1349658 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 66132899 is about 8132.2136592689. The cubic root of 66132899 is about 404.3950710877.

The spelling of 66132899 in words is "sixty-six million, one hundred thirty-two thousand, eight hundred ninety-nine".