6390834 has 32 divisors (see below), whose sum is σ = 13293504. Its totient is φ = 2046720.

The previous prime is 6390829. The next prime is 6390847. The reversal of 6390834 is 4380936.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6390795 and 6390804.

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, 20262 + ... + 20574.

It is an arithmetic number, because the mean of its divisors is an integer number (415422).

Almost surely, 2^6390834 is an apocalyptic number.

6390834 is an abundant number, since it is smaller than the sum of its proper divisors (6902670).

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

6390834 is a wasteful number, since it uses less digits than its factorization.

6390834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 6390834 is about 2528.0098892212. The cubic root of 6390834 is about 185.5748759901.

The spelling of 6390834 in words is "six million, three hundred ninety thousand, eight hundred thirty-four".