2223276645 has 16 divisors (see below), whose sum is σ = 3617536320. Its totient is φ = 1165649664.

The previous prime is 2223276641. The next prime is 2223276667. The reversal of 2223276645 is 5466723222.

It is not a de Polignac number, because 2223276645 - 2² = 2223276641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223276641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1255204 + ... + 1256973.

It is an arithmetic number, because the mean of its divisors is an integer number (226096020).

Almost surely, 2^2223276645 is an apocalyptic number.

It is an amenable number.

2223276645 is a deficient number, since it is larger than the sum of its proper divisors (1394259675).

2223276645 is a wasteful number, since it uses less digits than its factorization.

2223276645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512244.

The product of its digits is 241920, while the sum is 39.

The square root of 2223276645 is about 47151.6345952078. The cubic root of 2223276645 is about 1305.1622440345.

Adding to 2223276645 its reverse (5466723222), we get a palindrome (7689999867).

The spelling of 2223276645 in words is "two billion, two hundred twenty-three million, two hundred seventy-six thousand, six hundred forty-five".