6840450 has 72 divisors (see below), whose sum is σ = 19092528. Its totient is φ = 1820880.

The previous prime is 6840439. The next prime is 6840461. The reversal of 6840450 is 540486.

It is an interprime number because it is at equal distance from previous prime (6840439) and next prime (6840461).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11869 + ... + 12431.

It is an arithmetic number, because the mean of its divisors is an integer number (265174).

Almost surely, 2^6840450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6840450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9546264).

6840450 is an abundant number, since it is smaller than the sum of its proper divisors (12252078).

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

6840450 is a wasteful number, since it uses less digits than its factorization.

6840450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 6840450 is about 2615.4253956097. The cubic root of 6840450 is about 189.8285618851.

It can be divided in two parts, 6 and 840450, that added together give a triangular number (840456 = T₁₂₉₆).

The spelling of 6840450 in words is "six million, eight hundred forty thousand, four hundred fifty".