6490830 has 48 divisors (see below), whose sum is σ = 16324560. Its totient is φ = 1651584.

The previous prime is 6490817. The next prime is 6490831. The reversal of 6490830 is 380946.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6490831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15666 + ... + 16074.

It is an arithmetic number, because the mean of its divisors is an integer number (340095).

Almost surely, 2^6490830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6490830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8162280).

6490830 is an abundant number, since it is smaller than the sum of its proper divisors (9833730).

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

6490830 is a wasteful number, since it uses less digits than its factorization.

6490830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 6490830 is about 2547.7107371128. The cubic root of 6490830 is about 186.5377546730.

The spelling of 6490830 in words is "six million, four hundred ninety thousand, eight hundred thirty".