66632532 has 12 divisors (see below), whose sum is σ = 155475936. Its totient is φ = 22210840.

The previous prime is 66632521. The next prime is 66632539. The reversal of 66632532 is 23523666.

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 (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66632493 and 66632502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66632539) 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, 2776344 + ... + 2776367.

It is an arithmetic number, because the mean of its divisors is an integer number (12956328).

Almost surely, 2^66632532 is an apocalyptic number.

It is an amenable number.

66632532 is an abundant number, since it is smaller than the sum of its proper divisors (88843404).

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

66632532 is a wasteful number, since it uses less digits than its factorization.

66632532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552718 (or 5552716 counting only the distinct ones).

The product of its digits is 38880, while the sum is 33.

The square root of 66632532 is about 8162.8752287414. The cubic root of 66632532 is about 405.4109165776.

The spelling of 66632532 in words is "sixty-six million, six hundred thirty-two thousand, five hundred thirty-two".