132564661 has 4 divisors (see below), whose sum is σ = 132603372. Its totient is φ = 132525952.

The previous prime is 132564647. The next prime is 132564667. The reversal of 132564661 is 166465231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166465231 = 521 ⋅319511.

It can be written as a sum of positive squares in 2 ways, for example, as 24196561 + 108368100 = 4919^2 + 10410^2 .

It is a cyclic number.

It is not a de Polignac number, because 132564661 - 2⁹ = 132564149 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132564667) 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, 13660 + ... + 21253.

It is an arithmetic number, because the mean of its divisors is an integer number (33150843).

Almost surely, 2^132564661 is an apocalyptic number.

It is an amenable number.

132564661 is a deficient number, since it is larger than the sum of its proper divisors (38711).

132564661 is an equidigital number, since it uses as much as digits as its factorization.

132564661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38710.

The product of its digits is 25920, while the sum is 34.

The square root of 132564661 is about 11513.6727849978. The cubic root of 132564661 is about 509.8893275167.

It can be divided in two parts, 132564 and 661, that added together give a square (133225 = 365²).

The spelling of 132564661 in words is "one hundred thirty-two million, five hundred sixty-four thousand, six hundred sixty-one".