6299221 has 2 divisors, whose sum is σ = 6299222. Its totient is φ = 6299220.

The previous prime is 6299179. The next prime is 6299239. The reversal of 6299221 is 1229926.

6299221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6180196 + 119025 = 2486^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 6299221 - 2⁷ = 6299093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6299291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3149610 + 3149611.

It is an arithmetic number, because the mean of its divisors is an integer number (3149611).

Almost surely, 2^6299221 is an apocalyptic number.

It is an amenable number.

6299221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6299221 is an equidigital number, since it uses as much as digits as its factorization.

6299221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 6299221 is about 2509.8248942904. The cubic root of 6299221 is about 184.6838623152.

The spelling of 6299221 in words is "six million, two hundred ninety-nine thousand, two hundred twenty-one".