66563932 has 48 divisors (see below), whose sum is σ = 128116800. Its totient is φ = 30159360.

The previous prime is 66563929. The next prime is 66563933. The reversal of 66563932 is 23936566.

It is a happy number.

It is a Smith number, since the sum of its digits (40) 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 (66563933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162544 + ... + 162952.

It is an arithmetic number, because the mean of its divisors is an integer number (2669100).

Almost surely, 2^66563932 is an apocalyptic number.

It is an amenable number.

66563932 is a deficient number, since it is larger than the sum of its proper divisors (61552868).

66563932 is a wasteful number, since it uses less digits than its factorization.

66563932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 524 counting only the distinct ones).

The product of its digits is 174960, while the sum is 40.

The square root of 66563932 is about 8158.6721958907. The cubic root of 66563932 is about 405.2717416249.

The spelling of 66563932 in words is "sixty-six million, five hundred sixty-three thousand, nine hundred thirty-two".