6426401 has 2 divisors, whose sum is σ = 6426402. Its totient is φ = 6426400.

The previous prime is 6426397. The next prime is 6426403. The reversal of 6426401 is 1046246.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3519376 + 2907025 = 1876^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 6426401 - 2² = 6426397 is a prime.

Together with 6426403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6426403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3213200 + 3213201.

It is an arithmetic number, because the mean of its divisors is an integer number (3213201).

Almost surely, 2^6426401 is an apocalyptic number.

It is an amenable number.

6426401 is a deficient number, since it is larger than the sum of its proper divisors (1).

6426401 is an equidigital number, since it uses as much as digits as its factorization.

6426401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 6426401 is about 2535.0347137663. The cubic root of 6426401 is about 185.9185001559.

The spelling of 6426401 in words is "six million, four hundred twenty-six thousand, four hundred one".