6219901 has 2 divisors, whose sum is σ = 6219902. Its totient is φ = 6219900.

The previous prime is 6219893. The next prime is 6219919. The reversal of 6219901 is 1099126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6120676 + 99225 = 2474^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 6219901 - 2³ = 6219893 is a prime.

6219901 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6219901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6219971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3109950 + 3109951.

It is an arithmetic number, because the mean of its divisors is an integer number (3109951).

Almost surely, 2^6219901 is an apocalyptic number.

It is an amenable number.

6219901 is a deficient number, since it is larger than the sum of its proper divisors (1).

6219901 is an equidigital number, since it uses as much as digits as its factorization.

6219901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 6219901 is about 2493.9729348972. The cubic root of 6219901 is about 183.9054038803.

The spelling of 6219901 in words is "six million, two hundred nineteen thousand, nine hundred one".