6905149 has 2 divisors, whose sum is σ = 6905150. Its totient is φ = 6905148.

The previous prime is 6905137. The next prime is 6905167. The reversal of 6905149 is 9415096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4995225 + 1909924 = 2235^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 6905149 - 2⁹ = 6904637 is a prime.

It is an Ulam number.

6905149 is a lucky number.

It is equal to p₄₇₀₅₉₉ and since 6905149 and 470599 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6905449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3452574 + 3452575.

It is an arithmetic number, because the mean of its divisors is an integer number (3452575).

Almost surely, 2^6905149 is an apocalyptic number.

It is an amenable number.

6905149 is a deficient number, since it is larger than the sum of its proper divisors (1).

6905149 is an equidigital number, since it uses as much as digits as its factorization.

6905149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 6905149 is about 2627.7650199361. The cubic root of 6905149 is about 190.4251697565.

The spelling of 6905149 in words is "six million, nine hundred five thousand, one hundred forty-nine".