6840530 has 8 divisors (see below), whose sum is σ = 12312972. Its totient is φ = 2736208.

The previous prime is 6840527. The next prime is 6840541. The reversal of 6840530 is 350486.

It can be written as a sum of positive squares in 2 ways, for example, as 6507601 + 332929 = 2551^2 + 577^2 .

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6840530.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342017 + ... + 342036.

Almost surely, 2^6840530 is an apocalyptic number.

6840530 is a deficient number, since it is larger than the sum of its proper divisors (5472442).

6840530 is a wasteful number, since it uses less digits than its factorization.

6840530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684060.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6840530 is about 2615.4406894441. The cubic root of 6840530 is about 189.8293019059.

The spelling of 6840530 in words is "six million, eight hundred forty thousand, five hundred thirty".