32091661 has 16 divisors (see below), whose sum is σ = 38304000. Its totient is φ = 26304768.

The previous prime is 32091641. The next prime is 32091667. The reversal of 32091661 is 16619023.

It is not a de Polignac number, because 32091661 - 2⁷ = 32091533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32091667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22240 + ... + 23638.

It is an arithmetic number, because the mean of its divisors is an integer number (2394000).

Almost surely, 2^32091661 is an apocalyptic number.

It is an amenable number.

32091661 is a deficient number, since it is larger than the sum of its proper divisors (6212339).

32091661 is a wasteful number, since it uses less digits than its factorization.

32091661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 32091661 is about 5664.9502204344. The cubic root of 32091661 is about 317.7830521898.

The spelling of 32091661 in words is "thirty-two million, ninety-one thousand, six hundred sixty-one".