7562662661 has 2 divisors, whose sum is σ = 7562662662. Its totient is φ = 7562662660.

The previous prime is 7562662651. The next prime is 7562662669. The reversal of 7562662661 is 1662662657.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7481212036 + 81450625 = 86494^2 + 9025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7562662661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7562662669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3781331330 + 3781331331.

It is an arithmetic number, because the mean of its divisors is an integer number (3781331331).

Almost surely, 2^7562662661 is an apocalyptic number.

It is an amenable number.

7562662661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7562662661 is an equidigital number, since it uses as much as digits as its factorization.

7562662661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 47.

The square root of 7562662661 is about 86963.5708845951. The cubic root of 7562662661 is about 1962.8701754877.

The spelling of 7562662661 in words is "seven billion, five hundred sixty-two million, six hundred sixty-two thousand, six hundred sixty-one".