6145621 has 2 divisors, whose sum is σ = 6145622. Its totient is φ = 6145620.

The previous prime is 6145609. The next prime is 6145631. The reversal of 6145621 is 1265416.

6145621 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., 4157521 + 1988100 = 2039^2 + 1410^2 .

It is a cyclic number.

It is not a de Polignac number, because 6145621 - 2¹¹ = 6143573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6145631) 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, 3072810 + 3072811.

It is an arithmetic number, because the mean of its divisors is an integer number (3072811).

Almost surely, 2^6145621 is an apocalyptic number.

It is an amenable number.

6145621 is a deficient number, since it is larger than the sum of its proper divisors (1).

6145621 is an equidigital number, since it uses as much as digits as its factorization.

6145621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 6145621 is about 2479.0363046958. The cubic root of 6145621 is about 183.1703848730.

The spelling of 6145621 in words is "six million, one hundred forty-five thousand, six hundred twenty-one".