66345532 has 12 divisors (see below), whose sum is σ = 126659736. Its totient is φ = 30157040.

The previous prime is 66345481. The next prime is 66345541. The reversal of 66345532 is 23554366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753883 + ... + 753970.

It is an arithmetic number, because the mean of its divisors is an integer number (10554978).

Almost surely, 2^66345532 is an apocalyptic number.

It is an amenable number.

66345532 is a deficient number, since it is larger than the sum of its proper divisors (60314204).

66345532 is a wasteful number, since it uses less digits than its factorization.

66345532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507868 (or 1507866 counting only the distinct ones).

The product of its digits is 64800, while the sum is 34.

The square root of 66345532 is about 8145.2766681065. The cubic root of 66345532 is about 404.8280161912.

Adding to 66345532 its reverse (23554366), we get a palindrome (89899898).

The spelling of 66345532 in words is "sixty-six million, three hundred forty-five thousand, five hundred thirty-two".