2724744661 has 2 divisors, whose sum is σ = 2724744662. Its totient is φ = 2724744660.

The previous prime is 2724744643. The next prime is 2724744679. The reversal of 2724744661 is 1664474272.

It is a balanced prime because it is at equal distance from previous prime (2724744643) and next prime (2724744679).

It can be written as a sum of positive squares in only one way, i.e., 2017716561 + 707028100 = 44919^2 + 26590^2 .

It is a cyclic number.

It is not a de Polignac number, because 2724744661 - 2¹⁷ = 2724613589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2724744601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1362372330 + 1362372331.

It is an arithmetic number, because the mean of its divisors is an integer number (1362372331).

Almost surely, 2^2724744661 is an apocalyptic number.

It is an amenable number.

2724744661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2724744661 is an equidigital number, since it uses as much as digits as its factorization.

2724744661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 43.

The square root of 2724744661 is about 52199.0867831996. The cubic root of 2724744661 is about 1396.7175926417.

The spelling of 2724744661 in words is "two billion, seven hundred twenty-four million, seven hundred forty-four thousand, six hundred sixty-one".