808674661 has 2 divisors, whose sum is σ = 808674662. Its totient is φ = 808674660.

The previous prime is 808674623. The next prime is 808674673. The reversal of 808674661 is 166476808.

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., 621504900 + 187169761 = 24930^2 + 13681^2 .

It is a cyclic number.

It is not a de Polignac number, because 808674661 - 2²¹ = 806577509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808674961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404337330 + 404337331.

It is an arithmetic number, because the mean of its divisors is an integer number (404337331).

Almost surely, 2^808674661 is an apocalyptic number.

It is an amenable number.

808674661 is a deficient number, since it is larger than the sum of its proper divisors (1).

808674661 is an equidigital number, since it uses as much as digits as its factorization.

808674661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 808674661 is about 28437.2055764978. The cubic root of 808674661 is about 931.6610623384.

The spelling of 808674661 in words is "eight hundred eight million, six hundred seventy-four thousand, six hundred sixty-one".