6491856 has 60 divisors (see below), whose sum is σ = 19305312. Its totient is φ = 1841472.

The previous prime is 6491833. The next prime is 6491857. The reversal of 6491856 is 6581946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46635 + ... + 46773.

Almost surely, 2^6491856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6491856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9652656).

6491856 is an abundant number, since it is smaller than the sum of its proper divisors (12813456).

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

6491856 is a wasteful number, since it uses less digits than its factorization.

6491856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 151 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 6491856 is about 2547.9120863954. The cubic root of 6491856 is about 186.5475827768.

The spelling of 6491856 in words is "six million, four hundred ninety-one thousand, eight hundred fifty-six".