106656889 has 2 divisors, whose sum is σ = 106656890. Its totient is φ = 106656888.

The previous prime is 106656877. The next prime is 106656917. The reversal of 106656889 is 988656601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93026025 + 13630864 = 9645^2 + 3692^2 .

It is a cyclic number.

It is not a de Polignac number, because 106656889 - 2⁹ = 106656377 is a prime.

It is a super-2 number, since 2×106656889² = 22751383942316642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106656859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53328444 + 53328445.

It is an arithmetic number, because the mean of its divisors is an integer number (53328445).

Almost surely, 2^106656889 is an apocalyptic number.

It is an amenable number.

106656889 is a deficient number, since it is larger than the sum of its proper divisors (1).

106656889 is an equidigital number, since it uses as much as digits as its factorization.

106656889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 106656889 is about 10327.4822197862. The cubic root of 106656889 is about 474.2379492738.

The spelling of 106656889 in words is "one hundred six million, six hundred fifty-six thousand, eight hundred eighty-nine".