5662662661 has 2 divisors, whose sum is σ = 5662662662. Its totient is φ = 5662662660.

The previous prime is 5662662631. The next prime is 5662662671. The reversal of 5662662661 is 1662662665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5195670561 + 466992100 = 72081^2 + 21610^2 .

It is a cyclic number.

It is not a de Polignac number, because 5662662661 - 2²⁵ = 5629108229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5662662631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2831331330 + 2831331331.

It is an arithmetic number, because the mean of its divisors is an integer number (2831331331).

Almost surely, 2^5662662661 is an apocalyptic number.

It is an amenable number.

5662662661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5662662661 is an equidigital number, since it uses as much as digits as its factorization.

5662662661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 46.

The square root of 5662662661 is about 75250.6655186517. The cubic root of 5662662661 is about 1782.4070726655.

The spelling of 5662662661 in words is "five billion, six hundred sixty-two million, six hundred sixty-two thousand, six hundred sixty-one".