66475932 has 12 divisors (see below), whose sum is σ = 155110536. Its totient is φ = 22158640.

The previous prime is 66475931. The next prime is 66475963. The reversal of 66475932 is 23957466.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66475931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2769819 + ... + 2769842.

It is an arithmetic number, because the mean of its divisors is an integer number (12925878).

Almost surely, 2^66475932 is an apocalyptic number.

It is an amenable number.

66475932 is an abundant number, since it is smaller than the sum of its proper divisors (88634604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66475932 is a wasteful number, since it uses less digits than its factorization.

66475932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5539668 (or 5539666 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 66475932 is about 8153.2773778402. The cubic root of 66475932 is about 405.0930680796.

The spelling of 66475932 in words is "sixty-six million, four hundred seventy-five thousand, nine hundred thirty-two".