6631109 has 2 divisors, whose sum is σ = 6631110. Its totient is φ = 6631108.

The previous prime is 6631081. The next prime is 6631129. The reversal of 6631109 is 9011366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6630625 + 484 = 2575^2 + 22^2 .

It is a cyclic number.

It is not a de Polignac number, because 6631109 - 2⁸ = 6630853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6631129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315554 + 3315555.

It is an arithmetic number, because the mean of its divisors is an integer number (3315555).

Almost surely, 2^6631109 is an apocalyptic number.

It is an amenable number.

6631109 is a deficient number, since it is larger than the sum of its proper divisors (1).

6631109 is an equidigital number, since it uses as much as digits as its factorization.

6631109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 6631109 is about 2575.0939788676. The cubic root of 6631109 is about 187.8719986544.

The spelling of 6631109 in words is "six million, six hundred thirty-one thousand, one hundred nine".