426766 has 4 divisors (see below), whose sum is σ = 640152. Its totient is φ = 213382.

The previous prime is 426763. The next prime is 426773. The reversal of 426766 is 667624.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106690 + ... + 106693.

It is an arithmetic number, because the mean of its divisors is an integer number (160038).

2⁴²⁶⁷⁶⁶ is an apocalyptic number.

426766 is a deficient number, since it is larger than the sum of its proper divisors (213386).

426766 is a wasteful number, since it uses less digits than its factorization.

426766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213385.

The product of its digits is 12096, while the sum is 31.

The square root of 426766 is about 653.2732965612. The cubic root of 426766 is about 75.2887241225.

The spelling of 426766 in words is "four hundred twenty-six thousand, seven hundred sixty-six".