6840630 has 72 divisors (see below), whose sum is σ = 18965232. Its totient is φ = 1710336.

The previous prime is 6840619. The next prime is 6840643. The reversal of 6840630 is 360486.

It is a junction number, because it is equal to n+sod(n) for n = 6840594 and 6840603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25879 + ... + 26141.

It is an arithmetic number, because the mean of its divisors is an integer number (263406).

Almost surely, 2^6840630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6840630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9482616).

6840630 is an abundant number, since it is smaller than the sum of its proper divisors (12124602).

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

6840630 is a wasteful number, since it uses less digits than its factorization.

6840630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6840630 is about 2615.4598066114. The cubic root of 6840630 is about 189.8302269237.

The spelling of 6840630 in words is "six million, eight hundred forty thousand, six hundred thirty".