426286660 has 96 divisors (see below), whose sum is σ = 987033600. Its totient is φ = 154022400.

The previous prime is 426286643. The next prime is 426286681. The reversal of 426286660 is 66682624.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1112829 + ... + 1113211.

It is an arithmetic number, because the mean of its divisors is an integer number (10281600).

Almost surely, 2^426286660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426286660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493516800).

426286660 is an abundant number, since it is smaller than the sum of its proper divisors (560746940).

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

426286660 is a wasteful number, since it uses less digits than its factorization.

426286660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 426286660 is about 20646.7106339000. The cubic root of 426286660 is about 752.6052567414.

The spelling of 426286660 in words is "four hundred twenty-six million, two hundred eighty-six thousand, six hundred sixty".