6722340 has 48 divisors (see below), whose sum is σ = 18957120. Its totient is φ = 1779840.

The previous prime is 6722329. The next prime is 6722341. The reversal of 6722340 is 432276.

It is a self number, because there is not a number n which added to its sum of digits gives 6722340.

It is not an unprimeable number, because it can be changed into a prime (6722341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10551 + ... + 11169.

It is an arithmetic number, because the mean of its divisors is an integer number (394940).

Almost surely, 2^6722340 is an apocalyptic number.

6722340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6722340 is an abundant number, since it is smaller than the sum of its proper divisors (12234780).

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

6722340 is a wasteful number, since it uses less digits than its factorization.

6722340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 6722340 is about 2592.7475773781. The cubic root of 6722340 is about 188.7296602500.

Subtracting from 6722340 its reverse (432276), we obtain a square (6290064 = 2508²).

The spelling of 6722340 in words is "six million, seven hundred twenty-two thousand, three hundred forty".