132507691 has 4 divisors (see below), whose sum is σ = 139481800. Its totient is φ = 125533584.

The previous prime is 132507689. The next prime is 132507701. The reversal of 132507691 is 196705231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196705231 = 29 ⋅6782939.

It is a cyclic number.

It is not a de Polignac number, because 132507691 - 2¹ = 132507689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132507631) 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, 3487026 + ... + 3487063.

It is an arithmetic number, because the mean of its divisors is an integer number (34870450).

Almost surely, 2^132507691 is an apocalyptic number.

132507691 is a deficient number, since it is larger than the sum of its proper divisors (6974109).

132507691 is an equidigital number, since it uses as much as digits as its factorization.

132507691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6974108.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 132507691 is about 11511.1985040655. The cubic root of 132507691 is about 509.8162749727.

The spelling of 132507691 in words is "one hundred thirty-two million, five hundred seven thousand, six hundred ninety-one".