6106921 has 2 divisors, whose sum is σ = 6106922. Its totient is φ = 6106920.

The previous prime is 6106897. The next prime is 6106931. The reversal of 6106921 is 1296016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5760000 + 346921 = 2400^2 + 589^2 .

It is a cyclic number.

It is not a de Polignac number, because 6106921 - 2⁵ = 6106889 is a prime.

It is not a weakly prime, because it can be changed into another prime (6106931) 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, 3053460 + 3053461.

It is an arithmetic number, because the mean of its divisors is an integer number (3053461).

Almost surely, 2^6106921 is an apocalyptic number.

It is an amenable number.

6106921 is a deficient number, since it is larger than the sum of its proper divisors (1).

6106921 is an equidigital number, since it uses as much as digits as its factorization.

6106921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 6106921 is about 2471.2185253433. The cubic root of 6106921 is about 182.7850901657.

The spelling of 6106921 in words is "six million, one hundred six thousand, nine hundred twenty-one".