6800621 has 2 divisors, whose sum is σ = 6800622. Its totient is φ = 6800620.

The previous prime is 6800609. The next prime is 6800623. The reversal of 6800621 is 1260086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4351396 + 2449225 = 2086^2 + 1565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6800621 is a prime.

Together with 6800623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6800623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3400310 + 3400311.

It is an arithmetic number, because the mean of its divisors is an integer number (3400311).

Almost surely, 2^6800621 is an apocalyptic number.

It is an amenable number.

6800621 is a deficient number, since it is larger than the sum of its proper divisors (1).

6800621 is an equidigital number, since it uses as much as digits as its factorization.

6800621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 6800621 is about 2607.8000306772. The cubic root of 6800621 is about 189.4594144535.

The spelling of 6800621 in words is "six million, eight hundred thousand, six hundred twenty-one".