2205641623 has 4 divisors (see below), whose sum is σ = 2205797328. Its totient is φ = 2205485920.

The previous prime is 2205641597. The next prime is 2205641653. The reversal of 2205641623 is 3261465022.

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 2205641623 - 2²⁵ = 2172087191 is a prime.

It is a super-2 number, since 2×2205641623² = 9729709938220148258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205641653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54211 + ... + 85732.

It is an arithmetic number, because the mean of its divisors is an integer number (551449332).

Almost surely, 2^2205641623 is an apocalyptic number.

2205641623 is a deficient number, since it is larger than the sum of its proper divisors (155705).

2205641623 is a wasteful number, since it uses less digits than its factorization.

2205641623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155704.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2205641623 is about 46964.2589955383. The cubic root of 2205641623 is about 1301.7022322384.

The spelling of 2205641623 in words is "two billion, two hundred five million, six hundred forty-one thousand, six hundred twenty-three".