6499860 has 48 divisors (see below), whose sum is σ = 18364416. Its totient is φ = 1717632.

The previous prime is 6499859. The next prime is 6499861. The reversal of 6499860 is 689946.

It is an interprime number because it is at equal distance from previous prime (6499859) and next prime (6499861).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6499861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7194 + ... + 8046.

It is an arithmetic number, because the mean of its divisors is an integer number (382592).

Almost surely, 2^6499860 is an apocalyptic number.

6499860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6499860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9182208).

6499860 is an abundant number, since it is smaller than the sum of its proper divisors (11864556).

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

6499860 is a wasteful number, since it uses less digits than its factorization.

6499860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 6499860 is about 2549.4823003896. The cubic root of 6499860 is about 186.6242179554.

The spelling of 6499860 in words is "six million, four hundred ninety-nine thousand, eight hundred sixty".