6607690561 has 2 divisors, whose sum is σ = 6607690562. Its totient is φ = 6607690560.

The previous prime is 6607690541. The next prime is 6607690603. The reversal of 6607690561 is 1650967066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6606438400 + 1252161 = 81280^2 + 1119^2 .

It is a cyclic number.

It is not a de Polignac number, because 6607690561 - 2¹³ = 6607682369 is a prime.

It is not a weakly prime, because it can be changed into another prime (6607690501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303845280 + 3303845281.

It is an arithmetic number, because the mean of its divisors is an integer number (3303845281).

Almost surely, 2^6607690561 is an apocalyptic number.

It is an amenable number.

6607690561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6607690561 is an equidigital number, since it uses as much as digits as its factorization.

6607690561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 6607690561 is about 81287.7023971031. The cubic root of 6607690561 is about 1876.5057473577.

The spelling of 6607690561 in words is "six billion, six hundred seven million, six hundred ninety thousand, five hundred sixty-one".