32861681 has 2 divisors, whose sum is σ = 32861682. Its totient is φ = 32861680.

The previous prime is 32861671. The next prime is 32861693. The reversal of 32861681 is 18616823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18490000 + 14371681 = 4300^2 + 3791^2 .

It is a cyclic number.

It is not a de Polignac number, because 32861681 - 2¹⁰ = 32860657 is a prime.

It is a super-2 number, since 2×32861681² = 2159780156291522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (32861651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16430840 + 16430841.

It is an arithmetic number, because the mean of its divisors is an integer number (16430841).

Almost surely, 2^32861681 is an apocalyptic number.

It is an amenable number.

32861681 is a deficient number, since it is larger than the sum of its proper divisors (1).

32861681 is an equidigital number, since it uses as much as digits as its factorization.

32861681 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 32861681 is about 5732.5108809317. The cubic root of 32861681 is about 320.3046610225.

The spelling of 32861681 in words is "thirty-two million, eight hundred sixty-one thousand, six hundred eighty-one".