66132873 has 12 divisors (see below), whose sum is σ = 101144628. Its totient is φ = 41495040.

The previous prime is 66132821. The next prime is 66132929. The reversal of 66132873 is 37823166.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47444544 + 18688329 = 6888^2 + 4323^2 .

It is not a de Polignac number, because 66132873 - 2⁶ = 66132809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66132173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215968 + ... + 216273.

It is an arithmetic number, because the mean of its divisors is an integer number (8428719).

Almost surely, 2^66132873 is an apocalyptic number.

It is an amenable number.

66132873 is a deficient number, since it is larger than the sum of its proper divisors (35011755).

66132873 is a wasteful number, since it uses less digits than its factorization.

66132873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432264 (or 432261 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 66132873 is about 8132.2120606880. The cubic root of 66132873 is about 404.3950180921.

The spelling of 66132873 in words is "sixty-six million, one hundred thirty-two thousand, eight hundred seventy-three".