6662714257 has 4 divisors (see below), whose sum is σ = 6663052516. Its totient is φ = 6662376000.

The previous prime is 6662714237. The next prime is 6662714263. The reversal of 6662714257 is 7524172666.

6662714257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1614753856 + 5047960401 = 40184^2 + 71049^2 .

It is a cyclic number.

It is not a de Polignac number, because 6662714257 - 2¹¹ = 6662712209 is a prime.

It is a super-2 number, since 2×6662714257² = 88783522540862124098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6662714237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137628 + ... + 179629.

It is an arithmetic number, because the mean of its divisors is an integer number (1665763129).

Almost surely, 2^6662714257 is an apocalyptic number.

It is an amenable number.

6662714257 is a deficient number, since it is larger than the sum of its proper divisors (338259).

6662714257 is a wasteful number, since it uses less digits than its factorization.

6662714257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338258.

The product of its digits is 846720, while the sum is 46.

The square root of 6662714257 is about 81625.4510370387. The cubic root of 6662714257 is about 1881.7000482459.

The spelling of 6662714257 in words is "six billion, six hundred sixty-two million, seven hundred fourteen thousand, two hundred fifty-seven".