6424786261 has 2 divisors, whose sum is σ = 6424786262. Its totient is φ = 6424786260.

The previous prime is 6424786241. The next prime is 6424786267. The reversal of 6424786261 is 1626874246.

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., 6003305361 + 421480900 = 77481^2 + 20530^2 .

It is a cyclic number.

It is not a de Polignac number, because 6424786261 - 2⁹ = 6424785749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6424786267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3212393130 + 3212393131.

It is an arithmetic number, because the mean of its divisors is an integer number (3212393131).

Almost surely, 2^6424786261 is an apocalyptic number.

It is an amenable number.

6424786261 is a deficient number, since it is larger than the sum of its proper divisors (1).

6424786261 is an equidigital number, since it uses as much as digits as its factorization.

6424786261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 46.

The square root of 6424786261 is about 80154.7644310680. The cubic root of 6424786261 is about 1859.0292715732.

The spelling of 6424786261 in words is "six billion, four hundred twenty-four million, seven hundred eighty-six thousand, two hundred sixty-one".