32681639 has 2 divisors, whose sum is σ = 32681640. Its totient is φ = 32681638.

The previous prime is 32681629. The next prime is 32681647. The reversal of 32681639 is 93618623.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32681639 - 2²⁴ = 15904423 is a prime.

It is a Sophie Germain 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 (32681629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16340819 + 16340820.

It is an arithmetic number, because the mean of its divisors is an integer number (16340820).

Almost surely, 2^32681639 is an apocalyptic number.

32681639 is a deficient number, since it is larger than the sum of its proper divisors (1).

32681639 is an equidigital number, since it uses as much as digits as its factorization.

32681639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 32681639 is about 5716.7857227641. The cubic root of 32681639 is about 319.7186296216.

The spelling of 32681639 in words is "thirty-two million, six hundred eighty-one thousand, six hundred thirty-nine".