6339540 has 96 divisors (see below), whose sum is σ = 19192320. Its totient is φ = 1558656.

The previous prime is 6339511. The next prime is 6339551. The reversal of 6339540 is 459336.

It is a happy number.

6339540 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 junction number, because it is equal to n+sod(n) for n = 6339498 and 6339507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76339 + ... + 76421.

It is an arithmetic number, because the mean of its divisors is an integer number (199920).

Almost surely, 2^6339540 is an apocalyptic number.

6339540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6339540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9596160).

6339540 is an abundant number, since it is smaller than the sum of its proper divisors (12852780).

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

6339540 is a wasteful number, since it uses less digits than its factorization.

6339540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 179 counting only the distinct ones).

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

The square root of 6339540 is about 2517.8443160768. The cubic root of 6339540 is about 185.0770557991.

The spelling of 6339540 in words is "six million, three hundred thirty-nine thousand, five hundred forty".