6091861 has 2 divisors, whose sum is σ = 6091862. Its totient is φ = 6091860.

The previous prime is 6091847. The next prime is 6091867. The reversal of 6091861 is 1681906.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5152900 + 938961 = 2270^2 + 969^2 .

It is a cyclic number.

It is not a de Polignac number, because 6091861 - 2⁵ = 6091829 is a prime.

It is a super-2 number, since 2×6091861² = 74221540886642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6091867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3045930 + 3045931.

It is an arithmetic number, because the mean of its divisors is an integer number (3045931).

Almost surely, 2^6091861 is an apocalyptic number.

It is an amenable number.

6091861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6091861 is an equidigital number, since it uses as much as digits as its factorization.

6091861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 6091861 is about 2468.1695646774. The cubic root of 6091861 is about 182.6347138213.

The spelling of 6091861 in words is "six million, ninety-one thousand, eight hundred sixty-one".