6206475661 has 2 divisors, whose sum is σ = 6206475662. Its totient is φ = 6206475660.

The previous prime is 6206475643. The next prime is 6206475707. The reversal of 6206475661 is 1665746026.

It is a happy number.

6206475661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3729422761 + 2477052900 = 61069^2 + 49770^2 .

It is a cyclic number.

It is not a de Polignac number, because 6206475661 - 2¹³ = 6206467469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6206475461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3103237830 + 3103237831.

It is an arithmetic number, because the mean of its divisors is an integer number (3103237831).

Almost surely, 2^6206475661 is an apocalyptic number.

It is an amenable number.

6206475661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6206475661 is an equidigital number, since it uses as much as digits as its factorization.

6206475661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 6206475661 is about 78781.1884970010. The cubic root of 6206475661 is about 1837.7299175552.

The spelling of 6206475661 in words is "six billion, two hundred six million, four hundred seventy-five thousand, six hundred sixty-one".