6667410257 has 2 divisors, whose sum is σ = 6667410258. Its totient is φ = 6667410256.

The previous prime is 6667410241. The next prime is 6667410287. The reversal of 6667410257 is 7520147666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4198910401 + 2468499856 = 64799^2 + 49684^2 .

It is a cyclic number.

It is not a de Polignac number, because 6667410257 - 2⁴ = 6667410241 is a prime.

It is not a weakly prime, because it can be changed into another prime (6667410287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333705128 + 3333705129.

It is an arithmetic number, because the mean of its divisors is an integer number (3333705129).

Almost surely, 2^6667410257 is an apocalyptic number.

It is an amenable number.

6667410257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667410257 is an equidigital number, since it uses as much as digits as its factorization.

6667410257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 6667410257 is about 81654.2115080416. The cubic root of 6667410257 is about 1882.1420296900.

The spelling of 6667410257 in words is "six billion, six hundred sixty-seven million, four hundred ten thousand, two hundred fifty-seven".