6229621 has 2 divisors, whose sum is σ = 6229622. Its totient is φ = 6229620.

The previous prime is 6229591. The next prime is 6229627. The reversal of 6229621 is 1269226.

6229621 is nontrivially palindromic in base 3.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5948721 + 280900 = 2439^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 6229621 - 2⁵ = 6229589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6229621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6229627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3114810 + 3114811.

It is an arithmetic number, because the mean of its divisors is an integer number (3114811).

Almost surely, 2^6229621 is an apocalyptic number.

It is an amenable number.

6229621 is a deficient number, since it is larger than the sum of its proper divisors (1).

6229621 is an equidigital number, since it uses as much as digits as its factorization.

6229621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 6229621 is about 2495.9208721432. The cubic root of 6229621 is about 184.0011519304.

The spelling of 6229621 in words is "six million, two hundred twenty-nine thousand, six hundred twenty-one".