2203720664 has 8 divisors (see below), whose sum is σ = 4131976260. Its totient is φ = 1101860328.

The previous prime is 2203720663. The next prime is 2203720669. The reversal of 2203720664 is 4660273022.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2203720664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203720661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137732534 + ... + 137732549.

Almost surely, 2^2203720664 is an apocalyptic number.

It is an amenable number.

2203720664 is a deficient number, since it is larger than the sum of its proper divisors (1928255596).

2203720664 is a wasteful number, since it uses less digits than its factorization.

2203720664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275465089 (or 275465085 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 2203720664 is about 46943.8032545298. The cubic root of 2203720664 is about 1301.3242253932.

Adding to 2203720664 its reverse (4660273022), we get a palindrome (6863993686).

The spelling of 2203720664 in words is "two billion, two hundred three million, seven hundred twenty thousand, six hundred sixty-four".