623220205 has 4 divisors (see below), whose sum is σ = 747864252. Its totient is φ = 498576160.

The previous prime is 623220161. The next prime is 623220211. The reversal of 623220205 is 502022326.

It is a happy number.

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 295392969 + 327827236 = 17187^2 + 18106^2 .

It is not a de Polignac number, because 623220205 - 2⁷ = 623220077 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, 62322016 + ... + 62322025.

It is an arithmetic number, because the mean of its divisors is an integer number (186966063).

Almost surely, 2^623220205 is an apocalyptic number.

It is an amenable number.

623220205 is a deficient number, since it is larger than the sum of its proper divisors (124644047).

623220205 is a wasteful number, since it uses less digits than its factorization.

623220205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124644046.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 623220205 is about 24964.3787224918. The cubic root of 623220205 is about 854.1756266467.

The spelling of 623220205 in words is "six hundred twenty-three million, two hundred twenty thousand, two hundred five".