6680961278 has 4 divisors (see below), whose sum is σ = 10021441920. Its totient is φ = 3340480638.

The previous prime is 6680961211. The next prime is 6680961281. The reversal of 6680961278 is 8721690866.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1670240318 + ... + 1670240321.

It is an arithmetic number, because the mean of its divisors is an integer number (2505360480).

Almost surely, 2^6680961278 is an apocalyptic number.

6680961278 is a deficient number, since it is larger than the sum of its proper divisors (3340480642).

6680961278 is a wasteful number, since it uses less digits than its factorization.

6680961278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340480641.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 6680961278 is about 81737.1474789768. The cubic root of 6680961278 is about 1883.4162718968.

The spelling of 6680961278 in words is "six billion, six hundred eighty million, nine hundred sixty-one thousand, two hundred seventy-eight".