6681949475 has 12 divisors (see below), whose sum is σ = 8286631080. Its totient is φ = 5344905600.

The previous prime is 6681949451. The next prime is 6681949487. The reversal of 6681949475 is 5749491866.

6681949475 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6681949475 - 2⁶ = 6681949411 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395195 + ... + 411755.

It is an arithmetic number, because the mean of its divisors is an integer number (690552590).

Almost surely, 2^6681949475 is an apocalyptic number.

6681949475 is a deficient number, since it is larger than the sum of its proper divisors (1604681605).

6681949475 is a wasteful number, since it uses less digits than its factorization.

6681949475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32710 (or 32705 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 59.

The square root of 6681949475 is about 81743.1922241846. The cubic root of 6681949475 is about 1883.5091275242.

The spelling of 6681949475 in words is "six billion, six hundred eighty-one million, nine hundred forty-nine thousand, four hundred seventy-five".