66135332 has 6 divisors (see below), whose sum is σ = 115736838. Its totient is φ = 33067664.

The previous prime is 66135331. The next prime is 66135343. The reversal of 66135332 is 23353166.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 55741156 + 10394176 = 7466^2 + 3224^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66135295 and 66135304.

It is not an unprimeable number, because it can be changed into a prime (66135331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8266913 + ... + 8266920.

It is an arithmetic number, because the mean of its divisors is an integer number (19289473).

Almost surely, 2^66135332 is an apocalyptic number.

It is an amenable number.

66135332 is a deficient number, since it is larger than the sum of its proper divisors (49601506).

66135332 is a wasteful number, since it uses less digits than its factorization.

66135332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16533837 (or 16533835 counting only the distinct ones).

The product of its digits is 9720, while the sum is 29.

The square root of 66135332 is about 8132.3632481586. The cubic root of 66135332 is about 404.4000301986.

Adding to 66135332 its reverse (23353166), we get a palindrome (89488498).

The spelling of 66135332 in words is "sixty-six million, one hundred thirty-five thousand, three hundred thirty-two".