3205823 has 4 divisors (see below), whose sum is σ = 3274080. Its totient is φ = 3137568.

The previous prime is 3205793. The next prime is 3205837. The reversal of 3205823 is 3285023.

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

It is a cyclic number.

It is not a de Polignac number, because 3205823 - 2⁶ = 3205759 is a prime.

It is a super-2 number, since 2×3205823² = 20554602214658, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹³ + 2⁸ + 0 + 5² + 8³ + 2¹⁴ + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3205523) 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, 34058 + ... + 34151.

It is an arithmetic number, because the mean of its divisors is an integer number (818520).

Almost surely, 2^3205823 is an apocalyptic number.

3205823 is a deficient number, since it is larger than the sum of its proper divisors (68257).

3205823 is an equidigital number, since it uses as much as digits as its factorization.

3205823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68256.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3205823 is about 1790.4812202310. The cubic root of 3205823 is about 147.4505895977.

The spelling of 3205823 in words is "three million, two hundred five thousand, eight hundred twenty-three".