2244621661 has 4 divisors (see below), whose sum is σ = 2244844800. Its totient is φ = 2244398524.

The previous prime is 2244621647. The next prime is 2244621737. The reversal of 2244621661 is 1661264422.

2244621661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2244621661 - 2¹¹ = 2244619613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2244621641) 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, 95731 + ... + 116848.

It is an arithmetic number, because the mean of its divisors is an integer number (561211200).

Almost surely, 2^2244621661 is an apocalyptic number.

It is an amenable number.

2244621661 is a deficient number, since it is larger than the sum of its proper divisors (223139).

2244621661 is a wasteful number, since it uses less digits than its factorization.

2244621661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223138.

The product of its digits is 27648, while the sum is 34.

The square root of 2244621661 is about 47377.4383119223. The cubic root of 2244621661 is about 1309.3257725456.

The spelling of 2244621661 in words is "two billion, two hundred forty-four million, six hundred twenty-one thousand, six hundred sixty-one".