6420826001 has 2 divisors, whose sum is σ = 6420826002. Its totient is φ = 6420826000.

The previous prime is 6420825959. The next prime is 6420826003. The reversal of 6420826001 is 1006280246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5761569025 + 659256976 = 75905^2 + 25676^2 .

It is a cyclic number.

It is not a de Polignac number, because 6420826001 - 2⁶ = 6420825937 is a prime.

Together with 6420826003, 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 (6420826003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210413000 + 3210413001.

It is an arithmetic number, because the mean of its divisors is an integer number (3210413001).

Almost surely, 2^6420826001 is an apocalyptic number.

It is an amenable number.

6420826001 is a deficient number, since it is larger than the sum of its proper divisors (1).

6420826001 is an equidigital number, since it uses as much as digits as its factorization.

6420826001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 6420826001 is about 80130.0567889478. The cubic root of 6420826001 is about 1858.6472224183.

It can be divided in two parts, 64208 and 26001, that added together give a palindrome (90209).

The spelling of 6420826001 in words is "six billion, four hundred twenty million, eight hundred twenty-six thousand, one".