32006681 has 4 divisors (see below), whose sum is σ = 36579072. Its totient is φ = 27434292.

The previous prime is 32006669. The next prime is 32006683. The reversal of 32006681 is 18660023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32006681 - 2¹⁰ = 32005657 is a prime.

It is a super-2 number, since 2×32006681² = 2048855257271522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 32006681.

It is not an unprimeable number, because it can be changed into a prime (32006683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2286185 + ... + 2286198.

It is an arithmetic number, because the mean of its divisors is an integer number (9144768).

Almost surely, 2^32006681 is an apocalyptic number.

It is an amenable number.

32006681 is a deficient number, since it is larger than the sum of its proper divisors (4572391).

32006681 is an equidigital number, since it uses as much as digits as its factorization.

32006681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572390.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 32006681 is about 5657.4447412237. Note that the first 3 decimals coincide. The cubic root of 32006681 is about 317.5023034946.

The spelling of 32006681 in words is "thirty-two million, six thousand, six hundred eighty-one".