426813 has 4 divisors (see below), whose sum is σ = 569088. Its totient is φ = 284540.

The previous prime is 426799. The next prime is 426841. The reversal of 426813 is 318624.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 426813 - 2⁹ = 426301 is a prime.

It is a D-number.

426813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71133 + ... + 71138.

It is an arithmetic number, because the mean of its divisors is an integer number (142272).

2⁴²⁶⁸¹³ is an apocalyptic number.

It is an amenable number.

426813 is a deficient number, since it is larger than the sum of its proper divisors (142275).

426813 is a wasteful number, since it uses less digits than its factorization.

426813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142274.

The product of its digits is 1152, while the sum is 24.

The square root of 426813 is about 653.3092682643. The cubic root of 426813 is about 75.2914878854.

It can be divided in two parts, 42 and 6813, that multiplied together give a triangular number (286146 = T₇₅₆).

The spelling of 426813 in words is "four hundred twenty-six thousand, eight hundred thirteen".