6486091668 has 72 divisors (see below), whose sum is σ = 19839822912. Its totient is φ = 1744157952.

The previous prime is 6486091649. The next prime is 6486091679. The reversal of 6486091668 is 8661906846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 752730 + ... + 761297.

It is an arithmetic number, because the mean of its divisors is an integer number (275553096).

Almost surely, 2^6486091668 is an apocalyptic number.

6486091668 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6486091668 is an abundant number, since it is smaller than the sum of its proper divisors (13353731244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6486091668 is a wasteful number, since it uses less digits than its factorization.

6486091668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514061 (or 1514056 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 6486091668 is about 80536.2754788176. The cubic root of 6486091668 is about 1864.9235251964.

The spelling of 6486091668 in words is "six billion, four hundred eighty-six million, ninety-one thousand, six hundred sixty-eight".