132681643 has 4 divisors (see below), whose sum is σ = 136961728. Its totient is φ = 128401560.

The previous prime is 132681607. The next prime is 132681683. The reversal of 132681643 is 346186231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 132681643 - 2¹³ = 132673451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 132681599 and 132681608.

It is not an unprimeable number, because it can be changed into a prime (132681683) 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, 2139996 + ... + 2140057.

It is an arithmetic number, because the mean of its divisors is an integer number (34240432).

Almost surely, 2^132681643 is an apocalyptic number.

132681643 is a deficient number, since it is larger than the sum of its proper divisors (4280085).

132681643 is an equidigital number, since it uses as much as digits as its factorization.

132681643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280084.

The product of its digits is 20736, while the sum is 34.

The square root of 132681643 is about 11518.7517986976. The cubic root of 132681643 is about 510.0392677698.

The spelling of 132681643 in words is "one hundred thirty-two million, six hundred eighty-one thousand, six hundred forty-three".