6543390 has 32 divisors (see below), whose sum is σ = 17948160. Its totient is φ = 1495584.

The previous prime is 6543389. The next prime is 6543403. The reversal of 6543390 is 933456.

It is a happy number.

6543390 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent 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, 15370 + ... + 15789.

It is an arithmetic number, because the mean of its divisors is an integer number (560880).

Almost surely, 2^6543390 is an apocalyptic number.

6543390 is an abundant number, since it is smaller than the sum of its proper divisors (11404770).

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

6543390 is a wasteful number, since it uses less digits than its factorization.

6543390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31176.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 6543390 is about 2558.0050820903. The cubic root of 6543390 is about 187.0399030254.

The spelling of 6543390 in words is "six million, five hundred forty-three thousand, three hundred ninety".