6856460666 has 16 divisors (see below), whose sum is σ = 11228956128. Its totient is φ = 3113991600.

The previous prime is 6856460657. The next prime is 6856460711. The reversal of 6856460666 is 6660646586.

It is a super-2 number, since 2×6856460666² = 94022105728810327112, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101780 + ... + 155151.

It is an arithmetic number, because the mean of its divisors is an integer number (701809758).

Almost surely, 2^6856460666 is an apocalyptic number.

6856460666 is a deficient number, since it is larger than the sum of its proper divisors (4372495462).

6856460666 is a wasteful number, since it uses less digits than its factorization.

6856460666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258157.

The product of its (nonzero) digits is 7464960, while the sum is 53.

The square root of 6856460666 is about 82803.7478982685. The cubic root of 6856460666 is about 1899.7654988518.

The spelling of 6856460666 in words is "six billion, eight hundred fifty-six million, four hundred sixty thousand, six hundred sixty-six".