6734440 has 32 divisors (see below), whose sum is σ = 15644160. Its totient is φ = 2606400.

The previous prime is 6734401. The next prime is 6734443. The reversal of 6734440 is 444376.

It is a super-2 number, since 2×6734440² = 90705364227200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6734399 and 6734408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6734443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476 + ... + 3955.

It is an arithmetic number, because the mean of its divisors is an integer number (488880).

Almost surely, 2^6734440 is an apocalyptic number.

It is an amenable number.

6734440 is an abundant number, since it is smaller than the sum of its proper divisors (8909720).

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

6734440 is a wasteful number, since it uses less digits than its factorization.

6734440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473 (or 5469 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 6734440 is about 2595.0799602324. The cubic root of 6734440 is about 188.8428281897.

Subtracting from 6734440 its reverse (444376), we obtain a square (6290064 = 2508²).

The spelling of 6734440 in words is "six million, seven hundred thirty-four thousand, four hundred forty".