426826657 has 2 divisors, whose sum is σ = 426826658. Its totient is φ = 426826656.

The previous prime is 426826639. The next prime is 426826661. The reversal of 426826657 is 756628624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370216081 + 56610576 = 19241^2 + 7524^2 .

It is a cyclic number.

It is not a de Polignac number, because 426826657 - 2¹⁹ = 426302369 is a prime.

It is not a weakly prime, because it can be changed into another prime (426826957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213413328 + 213413329.

It is an arithmetic number, because the mean of its divisors is an integer number (213413329).

Almost surely, 2^426826657 is an apocalyptic number.

It is an amenable number.

426826657 is a deficient number, since it is larger than the sum of its proper divisors (1).

426826657 is an equidigital number, since it uses as much as digits as its factorization.

426826657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 46.

The square root of 426826657 is about 20659.7835661461. The cubic root of 426826657 is about 752.9229092632.

The spelling of 426826657 in words is "four hundred twenty-six million, eight hundred twenty-six thousand, six hundred fifty-seven".