6493890 has 32 divisors (see below), whose sum is σ = 16785216. Its totient is φ = 1598400.

The previous prime is 6493853. The next prime is 6493909. The reversal of 6493890 is 983946.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7936 + ... + 8715.

It is an arithmetic number, because the mean of its divisors is an integer number (524538).

Almost surely, 2^6493890 is an apocalyptic number.

6493890 is an abundant number, since it is smaller than the sum of its proper divisors (10291326).

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

6493890 is a wasteful number, since it uses less digits than its factorization.

6493890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16674.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 6493890 is about 2548.3112054849. The cubic root of 6493890 is about 186.5670635007.

The spelling of 6493890 in words is "six million, four hundred ninety-three thousand, eight hundred ninety".