6712440 has 128 divisors (see below), whose sum is σ = 23569920. Its totient is φ = 1497600.

The previous prime is 6712421. The next prime is 6712441. The reversal of 6712440 is 442176.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 6712440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6712441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51175 + ... + 51305.

It is an arithmetic number, because the mean of its divisors is an integer number (184140).

Almost surely, 2^6712440 is an apocalyptic number.

6712440 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 6712440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11784960).

6712440 is an abundant number, since it is smaller than the sum of its proper divisors (16857480).

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

6712440 is a wasteful number, since it uses less digits than its factorization.

6712440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 6712440 is about 2590.8377023658. The cubic root of 6712440 is about 188.6369672493.

The spelling of 6712440 in words is "six million, seven hundred twelve thousand, four hundred forty".