132661823 has 4 divisors (see below), whose sum is σ = 151613520. Its totient is φ = 113710128.

The previous prime is 132661813. The next prime is 132661843. The reversal of 132661823 is 328166231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328166231 = 23 ⋅14268097.

It is not a de Polignac number, because 132661823 - 2⁸ = 132661567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 132661823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132661813) 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, 9475838 + ... + 9475851.

It is an arithmetic number, because the mean of its divisors is an integer number (37903380).

Almost surely, 2^132661823 is an apocalyptic number.

132661823 is a deficient number, since it is larger than the sum of its proper divisors (18951697).

132661823 is an equidigital number, since it uses as much as digits as its factorization.

132661823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18951696.

The product of its digits is 10368, while the sum is 32.

The square root of 132661823 is about 11517.8914302923. The cubic root of 132661823 is about 510.0138699291.

The spelling of 132661823 in words is "one hundred thirty-two million, six hundred sixty-one thousand, eight hundred twenty-three".