66131132 has 6 divisors (see below), whose sum is σ = 115729488. Its totient is φ = 33065564.

The previous prime is 66131129. The next prime is 66131161. The reversal of 66131132 is 23113166.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66131098 and 66131107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8266388 + ... + 8266395.

It is an arithmetic number, because the mean of its divisors is an integer number (19288248).

Almost surely, 2^66131132 is an apocalyptic number.

It is an amenable number.

66131132 is a deficient number, since it is larger than the sum of its proper divisors (49598356).

66131132 is a wasteful number, since it uses less digits than its factorization.

66131132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16532787 (or 16532785 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 66131132 is about 8132.1050165378. The cubic root of 66131132 is about 404.3914693884.

Adding to 66131132 its reverse (23113166), we get a palindrome (89244298).

The spelling of 66131132 in words is "sixty-six million, one hundred thirty-one thousand, one hundred thirty-two".