2224471661 has 2 divisors, whose sum is σ = 2224471662. Its totient is φ = 2224471660.

The previous prime is 2224471643. The next prime is 2224471699. The reversal of 2224471661 is 1661744222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2171094025 + 53377636 = 46595^2 + 7306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2224471661 is a prime.

It is a super-3 number, since 3×2224471661³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2224474661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112235830 + 1112235831.

It is an arithmetic number, because the mean of its divisors is an integer number (1112235831).

Almost surely, 2^2224471661 is an apocalyptic number.

It is an amenable number.

2224471661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2224471661 is an equidigital number, since it uses as much as digits as its factorization.

2224471661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 2224471661 is about 47164.3049455836. The cubic root of 2224471661 is about 1305.3960446587.

The spelling of 2224471661 in words is "two billion, two hundred twenty-four million, four hundred seventy-one thousand, six hundred sixty-one".