6814666657 has 4 divisors (see below), whose sum is σ = 6816266496. Its totient is φ = 6813066820.

The previous prime is 6814666633. The next prime is 6814666669. The reversal of 6814666657 is 7566664186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7566664186 = 2 ⋅3783332093.

It is a cyclic number.

It is not a de Polignac number, because 6814666657 - 2¹¹ = 6814664609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6814666598 and 6814666607.

It is not an unprimeable number, because it can be changed into a prime (6814666627) 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, 793513 + ... + 802054.

It is an arithmetic number, because the mean of its divisors is an integer number (1704066624).

Almost surely, 2^6814666657 is an apocalyptic number.

It is an amenable number.

6814666657 is a deficient number, since it is larger than the sum of its proper divisors (1599839).

6814666657 is a wasteful number, since it uses less digits than its factorization.

6814666657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599838.

The product of its digits is 8709120, while the sum is 55.

The square root of 6814666657 is about 82550.9942823222. The cubic root of 6814666657 is about 1895.8975804172.

The spelling of 6814666657 in words is "six billion, eight hundred fourteen million, six hundred sixty-six thousand, six hundred fifty-seven".