6680392177 has 2 divisors, whose sum is σ = 6680392178. Its totient is φ = 6680392176.

The previous prime is 6680392157. The next prime is 6680392241. The reversal of 6680392177 is 7712930866.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6361019536 + 319372641 = 79756^2 + 17871^2 .

It is a cyclic number.

It is not a de Polignac number, because 6680392177 - 2³¹ = 4532908529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6680392177.

It is not a weakly prime, because it can be changed into another prime (6680392157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340196088 + 3340196089.

It is an arithmetic number, because the mean of its divisors is an integer number (3340196089).

Almost surely, 2^6680392177 is an apocalyptic number.

It is an amenable number.

6680392177 is a deficient number, since it is larger than the sum of its proper divisors (1).

6680392177 is an equidigital number, since it uses as much as digits as its factorization.

6680392177 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 49.

The square root of 6680392177 is about 81733.6661174574. Note that the first 3 decimals coincide. The cubic root of 6680392177 is about 1883.3627923412.

The spelling of 6680392177 in words is "six billion, six hundred eighty million, three hundred ninety-two thousand, one hundred seventy-seven".