132691 has 8 divisors (see below), whose sum is σ = 146160. Its totient is φ = 119712.

The previous prime is 132689. The next prime is 132697. The reversal of 132691 is 196231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 132691 - 2¹ = 132689 is a prime.

It is a Duffinian number.

132691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (132697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681 + ... + 853.

It is an arithmetic number, because the mean of its divisors is an integer number (18270).

2¹³²⁶⁹¹ is an apocalyptic number.

132691 is a deficient number, since it is larger than the sum of its proper divisors (13469).

132691 is a wasteful number, since it uses less digits than its factorization.

132691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245.

The product of its digits is 324, while the sum is 22.

The square root of 132691 is about 364.2677586611. The cubic root of 132691 is about 51.0051257183.

It can be divided in two parts, 13 and 2691, that added together give a square (2704 = 52²).

The spelling of 132691 in words is "one hundred thirty-two thousand, six hundred ninety-one".