426857 has 8 divisors (see below), whose sum is σ = 453696. Its totient is φ = 400752.

The previous prime is 426841. The next prime is 426859. The reversal of 426857 is 758624.

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

It is not a de Polignac number, because 426857 - 2⁴ = 426841 is a prime.

It is a super-3 number, since 3×426857³ = 233328870153734379, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1403 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (56712).

2⁴²⁶⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

426857 is a deficient number, since it is larger than the sum of its proper divisors (26839).

426857 is a wasteful number, since it uses less digits than its factorization.

426857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367.

The product of its digits is 13440, while the sum is 32.

The square root of 426857 is about 653.3429421062. The cubic root of 426857 is about 75.2940750541.

The spelling of 426857 in words is "four hundred twenty-six thousand, eight hundred fifty-seven".