32681861 has 2 divisors, whose sum is σ = 32681862. Its totient is φ = 32681860.

The previous prime is 32681851. The next prime is 32681893. The reversal of 32681861 is 16818623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20079361 + 12602500 = 4481^2 + 3550^2 .

It is an emirp because it is prime and its reverse (16818623) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32681861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32681821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16340930 + 16340931.

It is an arithmetic number, because the mean of its divisors is an integer number (16340931).

Almost surely, 2^32681861 is an apocalyptic number.

It is an amenable number.

32681861 is a deficient number, since it is larger than the sum of its proper divisors (1).

32681861 is an equidigital number, since it uses as much as digits as its factorization.

32681861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 32681861 is about 5716.8051392364. The cubic root of 32681861 is about 319.7193535487.

The spelling of 32681861 in words is "thirty-two million, six hundred eighty-one thousand, eight hundred sixty-one".