426008646 has 168 divisors, whose sum is σ = 1143846360. Its totient is φ = 118552896.

The previous prime is 426008621. The next prime is 426008651. The reversal of 426008646 is 646800624.

It is a happy number.

426008646 is a `hidden beast` number, since 4 + 2 + 6 + 0 + 0 + 8 + 646 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 426008646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 4786570 + ... + 4786658.

Almost surely, 2^426008646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426008646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571923180).

426008646 is an abundant number, since it is smaller than the sum of its proper divisors (717837714).

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

426008646 is an equidigital number, since it uses as much as digits as its factorization.

426008646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 426008646 is about 20639.9768895219. The cubic root of 426008646 is about 752.4416107570.

The spelling of 426008646 in words is "four hundred twenty-six million, eight thousand, six hundred forty-six".