423685 has 4 divisors (see below), whose sum is σ = 508428. Its totient is φ = 338944.

The previous prime is 423667. The next prime is 423697. The reversal of 423685 is 586324.

423685 is nontrivially palindromic in base 7.

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

It can be written as a sum of positive squares in 2 ways, for example, as 236196 + 187489 = 486^2 + 433^2 .

It is a cyclic number.

It is not a de Polignac number, because 423685 - 2⁷ = 423557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42364 + ... + 42373.

It is an arithmetic number, because the mean of its divisors is an integer number (127107).

2⁴²³⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

423685 is a deficient number, since it is larger than the sum of its proper divisors (84743).

423685 is an equidigital number, since it uses as much as digits as its factorization.

423685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84742.

The product of its digits is 5760, while the sum is 28.

The square root of 423685 is about 650.9109002006. The cubic root of 423685 is about 75.1071062299.

The spelling of 423685 in words is "four hundred twenty-three thousand, six hundred eighty-five".