2574223661 has 2 divisors, whose sum is σ = 2574223662. Its totient is φ = 2574223660.

The previous prime is 2574223649. The next prime is 2574223667. The reversal of 2574223661 is 1663224752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1773673225 + 800550436 = 42115^2 + 28294^2 .

It is a cyclic number.

It is not a de Polignac number, because 2574223661 - 2¹⁴ = 2574207277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2574223667) 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, 1287111830 + 1287111831.

It is an arithmetic number, because the mean of its divisors is an integer number (1287111831).

Almost surely, 2^2574223661 is an apocalyptic number.

It is an amenable number.

2574223661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2574223661 is an equidigital number, since it uses as much as digits as its factorization.

2574223661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 38.

The square root of 2574223661 is about 50736.8077533461. The cubic root of 2574223661 is about 1370.5096335078.

The spelling of 2574223661 in words is "two billion, five hundred seventy-four million, two hundred twenty-three thousand, six hundred sixty-one".