132561688 has 32 divisors (see below), whose sum is σ = 285328800. Its totient is φ = 56558592.

The previous prime is 132561683. The next prime is 132561691. The reversal of 132561688 is 886165231.

It is a super-2 number, since 2×132561688² = 35145202250818688, which contains 22 as substring.

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 self number, because there is not a number n which added to its sum of digits gives 132561688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132561683) 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, 7656 + ... + 17992.

It is an arithmetic number, because the mean of its divisors is an integer number (8916525).

Almost surely, 2^132561688 is an apocalyptic number.

It is an amenable number.

132561688 is an abundant number, since it is smaller than the sum of its proper divisors (152767112).

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

132561688 is a wasteful number, since it uses less digits than its factorization.

132561688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10579 (or 10575 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 132561688 is about 11513.5436769050. The cubic root of 132561688 is about 509.8855157610.

The spelling of 132561688 in words is "one hundred thirty-two million, five hundred sixty-one thousand, six hundred eighty-eight".