6487891746 has 48 divisors (see below), whose sum is σ = 15113226240. Its totient is φ = 1851356640.

The previous prime is 6487891733. The next prime is 6487891769. The reversal of 6487891746 is 6471987846.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6487891746.

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, 227935 + ... + 254813.

It is an arithmetic number, because the mean of its divisors is an integer number (314858880).

Almost surely, 2^6487891746 is an apocalyptic number.

6487891746 is an abundant number, since it is smaller than the sum of its proper divisors (8625334494).

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

6487891746 is a wasteful number, since it uses less digits than its factorization.

6487891746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27719 (or 27712 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 60.

The square root of 6487891746 is about 80547.4502762192. The cubic root of 6487891746 is about 1865.0960326412.

The spelling of 6487891746 in words is "six billion, four hundred eighty-seven million, eight hundred ninety-one thousand, seven hundred forty-six".