106631689 has 2 divisors, whose sum is σ = 106631690. Its totient is φ = 106631688.

The previous prime is 106631683. The next prime is 106631699. The reversal of 106631689 is 986136601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56505289 + 50126400 = 7517^2 + 7080^2 .

It is a cyclic number.

It is not a de Polignac number, because 106631689 - 2¹⁹ = 106107401 is a prime.

It is a super-2 number, since 2×106631689² = 22740634197985442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106631683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53315844 + 53315845.

It is an arithmetic number, because the mean of its divisors is an integer number (53315845).

Almost surely, 2^106631689 is an apocalyptic number.

It is an amenable number.

106631689 is a deficient number, since it is larger than the sum of its proper divisors (1).

106631689 is an equidigital number, since it uses as much as digits as its factorization.

106631689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 106631689 is about 10326.2621020387. The cubic root of 106631689 is about 474.2005966696.

The spelling of 106631689 in words is "one hundred six million, six hundred thirty-one thousand, six hundred eighty-nine".