66136532 has 24 divisors (see below), whose sum is σ = 144298560. Its totient is φ = 25767360.

The previous prime is 66136531. The next prime is 66136541. The reversal of 66136532 is 23563166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66136531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107057 + ... + 107672.

It is an arithmetic number, because the mean of its divisors is an integer number (6012440).

Almost surely, 2^66136532 is an apocalyptic number.

It is an amenable number.

66136532 is an abundant number, since it is smaller than the sum of its proper divisors (78162028).

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

66136532 is a wasteful number, since it uses less digits than its factorization.

66136532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214751 (or 214749 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 66136532 is about 8132.4370271155. The cubic root of 66136532 is about 404.4024760779.

Adding to 66136532 its reverse (23563166), we get a palindrome (89699698).

The spelling of 66136532 in words is "sixty-six million, one hundred thirty-six thousand, five hundred thirty-two".