426685807 has 2 divisors, whose sum is σ = 426685808. Its totient is φ = 426685806.

The previous prime is 426685801. The next prime is 426685823. The reversal of 426685807 is 708586624.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426685807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426685801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213342903 + 213342904.

It is an arithmetic number, because the mean of its divisors is an integer number (213342904).

Almost surely, 2^426685807 is an apocalyptic number.

426685807 is a deficient number, since it is larger than the sum of its proper divisors (1).

426685807 is an equidigital number, since it uses as much as digits as its factorization.

426685807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 426685807 is about 20656.3744882784. The cubic root of 426685807 is about 752.8400802760.

The spelling of 426685807 in words is "four hundred twenty-six million, six hundred eighty-five thousand, eight hundred seven".