6686449094 has 32 divisors (see below), whose sum is σ = 11285084160. Its totient is φ = 2948137632.

The previous prime is 6686449079. The next prime is 6686449097. The reversal of 6686449094 is 4909446866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6686449097) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 495059 + ... + 508385.

It is an arithmetic number, because the mean of its divisors is an integer number (352658880).

Almost surely, 2^6686449094 is an apocalyptic number.

6686449094 is a deficient number, since it is larger than the sum of its proper divisors (4598635066).

6686449094 is a wasteful number, since it uses less digits than its factorization.

6686449094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14204.

The product of its (nonzero) digits is 8957952, while the sum is 56.

The square root of 6686449094 is about 81770.7104897591. The cubic root of 6686449094 is about 1883.9318171315.

The spelling of 6686449094 in words is "six billion, six hundred eighty-six million, four hundred forty-nine thousand, ninety-four".