426985 has 8 divisors (see below), whose sum is σ = 551880. Its totient is φ = 315264.

The previous prime is 426973. The next prime is 426997. The reversal of 426985 is 589624.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (426973) and next prime (426997).

It can be written as a sum of positive squares in 4 ways, for example, as 52441 + 374544 = 229^2 + 612^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 426985 - 2¹³ = 418793 is a prime.

426985 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 426985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3220 + ... + 3349.

It is an arithmetic number, because the mean of its divisors is an integer number (68985).

2⁴²⁶⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

426985 is a deficient number, since it is larger than the sum of its proper divisors (124895).

426985 is a wasteful number, since it uses less digits than its factorization.

426985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6587.

The product of its digits is 17280, while the sum is 34.

The square root of 426985 is about 653.4408925067. The cubic root of 426985 is about 75.3016003521.

The spelling of 426985 in words is "four hundred twenty-six thousand, nine hundred eighty-five".