32081691 has 4 divisors (see below), whose sum is σ = 42775592. Its totient is φ = 21387792.

The previous prime is 32081689. The next prime is 32081767. The reversal of 32081691 is 19618023.

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

It is not a de Polignac number, because 32081691 - 2¹ = 32081689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32081591) 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, 5346946 + ... + 5346951.

It is an arithmetic number, because the mean of its divisors is an integer number (10693898).

Almost surely, 2^32081691 is an apocalyptic number.

32081691 is a deficient number, since it is larger than the sum of its proper divisors (10693901).

32081691 is a wasteful number, since it uses less digits than its factorization.

32081691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10693900.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 32081691 is about 5664.0701796500. The cubic root of 32081691 is about 317.7501399514.

The spelling of 32081691 in words is "thirty-two million, eighty-one thousand, six hundred ninety-one".