66406232 has 16 divisors (see below), whose sum is σ = 124610640. Its totient is φ = 33176736.

The previous prime is 66406181. The next prime is 66406237. The reversal of 66406232 is 23260466.

It is a junction number, because it is equal to n+sod(n) for n = 66406195 and 66406204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66406237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11093 + ... + 15995.

It is an arithmetic number, because the mean of its divisors is an integer number (7788165).

Almost surely, 2^66406232 is an apocalyptic number.

It is an amenable number.

66406232 is a deficient number, since it is larger than the sum of its proper divisors (58204408).

66406232 is a wasteful number, since it uses less digits than its factorization.

66406232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6602 (or 6598 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 66406232 is about 8149.0019020737. The cubic root of 66406232 is about 404.9514385711.

Adding to 66406232 its reverse (23260466), we get a palindrome (89666698).

The spelling of 66406232 in words is "sixty-six million, four hundred six thousand, two hundred thirty-two".