6770436661 has 2 divisors, whose sum is σ = 6770436662. Its totient is φ = 6770436660.

The previous prime is 6770436637. The next prime is 6770436683. The reversal of 6770436661 is 1666340776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5093534161 + 1676902500 = 71369^2 + 40950^2 .

It is a cyclic number.

It is not a de Polignac number, because 6770436661 - 2¹⁷ = 6770305589 is a prime.

It is a super-2 number, since 2×6770436661² = 91677625161225657842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6770436061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3385218330 + 3385218331.

It is an arithmetic number, because the mean of its divisors is an integer number (3385218331).

Almost surely, 2^6770436661 is an apocalyptic number.

It is an amenable number.

6770436661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6770436661 is an equidigital number, since it uses as much as digits as its factorization.

6770436661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 46.

The square root of 6770436661 is about 82282.6631861172. The cubic root of 6770436661 is about 1891.7869553667.

The spelling of 6770436661 in words is "six billion, seven hundred seventy million, four hundred thirty-six thousand, six hundred sixty-one".