101680889 has 2 divisors, whose sum is σ = 101680890. Its totient is φ = 101680888.

The previous prime is 101680829. The next prime is 101680933. The reversal of 101680889 is 988086101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101344489 + 336400 = 10067^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 101680889 - 2⁸ = 101680633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101680829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50840444 + 50840445.

It is an arithmetic number, because the mean of its divisors is an integer number (50840445).

Almost surely, 2^101680889 is an apocalyptic number.

It is an amenable number.

101680889 is a deficient number, since it is larger than the sum of its proper divisors (1).

101680889 is an equidigital number, since it uses as much as digits as its factorization.

101680889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 101680889 is about 10083.6942139278. The cubic root of 101680889 is about 466.7451116995.

Adding to 101680889 its sum of digits (41), we get a triangular number (101680930 = T₁₄₂₆₀).

The spelling of 101680889 in words is "one hundred one million, six hundred eighty thousand, eight hundred eighty-nine".