6706440 has 96 divisors (see below), whose sum is σ = 23488920. Its totient is φ = 1649664.

The previous prime is 6706423. The next prime is 6706459. The reversal of 6706440 is 446076.

It can be written as a sum of positive squares in 4 ways, for example, as 5280804 + 1425636 = 2298^2 + 1194^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3964 + ... + 5396.

Almost surely, 2^6706440 is an apocalyptic number.

6706440 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 6706440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11744460).

6706440 is an abundant number, since it is smaller than the sum of its proper divisors (16782480).

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

6706440 is a wasteful number, since it uses less digits than its factorization.

6706440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463 (or 1456 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 6706440 is about 2589.6795168515. The cubic root of 6706440 is about 188.5807453091.

The spelling of 6706440 in words is "six million, seven hundred six thousand, four hundred forty".