6490906 has 8 divisors (see below), whose sum is σ = 10309140. Its totient is φ = 3054528.

The previous prime is 6490903. The next prime is 6490907. The reversal of 6490906 is 6090946.

It can be written as a sum of positive squares in 2 ways, for example, as 6456681 + 34225 = 2541^2 + 185^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 190909 = 6490906 / (6 + 4 + 9 + 0 + 9 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (6490903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95421 + ... + 95488.

Almost surely, 2^6490906 is an apocalyptic number.

6490906 is a deficient number, since it is larger than the sum of its proper divisors (3818234).

6490906 is a wasteful number, since it uses less digits than its factorization.

6490906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190928.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 6490906 is about 2547.7256524202. The cubic root of 6490906 is about 186.5384827162.

It can be divided in two parts, 6490 and 906, that added together give a square (7396 = 86²).

The spelling of 6490906 in words is "six million, four hundred ninety thousand, nine hundred six".