426685806 has 20 divisors (see below), whose sum is σ = 956092632. Its totient is φ = 142228548.

The previous prime is 426685801. The next prime is 426685807. The reversal of 426685806 is 608586624.

426685806 is a `hidden beast` number, since 4 + 2 + 6 + 68 + 580 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426685801) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1316770 + ... + 1317093.

Almost surely, 2^426685806 is an apocalyptic number.

426685806 is an abundant number, since it is smaller than the sum of its proper divisors (529406826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

426685806 is a wasteful number, since it uses less digits than its factorization.

426685806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633877 (or 2633868 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 426685806 is about 20656.3744640728. The cubic root of 426685806 is about 752.8400796879.

The spelling of 426685806 in words is "four hundred twenty-six million, six hundred eighty-five thousand, eight hundred six".