6838621 has 2 divisors, whose sum is σ = 6838622. Its totient is φ = 6838620.

The previous prime is 6838603. The next prime is 6838633. The reversal of 6838621 is 1268386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6832996 + 5625 = 2614^2 + 75^2 .

It is a cyclic number.

It is not a de Polignac number, because 6838621 - 2⁵ = 6838589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6838681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3419310 + 3419311.

It is an arithmetic number, because the mean of its divisors is an integer number (3419311).

Almost surely, 2^6838621 is an apocalyptic number.

It is an amenable number.

6838621 is a deficient number, since it is larger than the sum of its proper divisors (1).

6838621 is an equidigital number, since it uses as much as digits as its factorization.

6838621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 6838621 is about 2615.0757159211. The cubic root of 6838621 is about 189.8116415855.

The spelling of 6838621 in words is "six million, eight hundred thirty-eight thousand, six hundred twenty-one".