32106661 has 4 divisors (see below), whose sum is σ = 32467500. Its totient is φ = 31745824.

The previous prime is 32106631. The next prime is 32106667. The reversal of 32106661 is 16660123.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18922500 + 13184161 = 4350^2 + 3631^2 .

It is a cyclic number.

It is not a de Polignac number, because 32106661 - 2⁷ = 32106533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32106667) 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, 180286 + ... + 180463.

It is an arithmetic number, because the mean of its divisors is an integer number (8116875).

Almost surely, 2^32106661 is an apocalyptic number.

It is an amenable number.

32106661 is a deficient number, since it is larger than the sum of its proper divisors (360839).

32106661 is an equidigital number, since it uses as much as digits as its factorization.

32106661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360838.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 32106661 is about 5666.2739961989. The cubic root of 32106661 is about 317.8325562577.

Adding to 32106661 its reverse (16660123), we get a palindrome (48766784).

The spelling of 32106661 in words is "thirty-two million, one hundred six thousand, six hundred sixty-one".