6377221 has 2 divisors, whose sum is σ = 6377222. Its totient is φ = 6377220.

The previous prime is 6377197. The next prime is 6377257. The reversal of 6377221 is 1227736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3276100 + 3101121 = 1810^2 + 1761^2 .

It is a cyclic number.

It is not a de Polignac number, because 6377221 - 2¹⁹ = 5852933 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6377221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6377321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3188610 + 3188611.

It is an arithmetic number, because the mean of its divisors is an integer number (3188611).

Almost surely, 2^6377221 is an apocalyptic number.

It is an amenable number.

6377221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6377221 is an equidigital number, since it uses as much as digits as its factorization.

6377221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 28.

The square root of 6377221 is about 2525.3160198280. The cubic root of 6377221 is about 185.4430190939.

It can be divided in two parts, 63 and 77221, that added together give a square (77284 = 278²).

The spelling of 6377221 in words is "six million, three hundred seventy-seven thousand, two hundred twenty-one".