6490815 has 8 divisors (see below), whose sum is σ = 10385328. Its totient is φ = 3461760.

The previous prime is 6490801. The next prime is 6490817. The reversal of 6490815 is 5180946.

6490815 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6490815 - 2¹¹ = 6488767 is a prime.

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 (6490817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216346 + ... + 216375.

It is an arithmetic number, because the mean of its divisors is an integer number (1298166).

Almost surely, 2^6490815 is an apocalyptic number.

6490815 is a deficient number, since it is larger than the sum of its proper divisors (3894513).

6490815 is a wasteful number, since it uses less digits than its factorization.

6490815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432729.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 6490815 is about 2547.7077932918. The cubic root of 6490815 is about 186.5376109796.

The spelling of 6490815 in words is "six million, four hundred ninety thousand, eight hundred fifteen".