6706389 has 8 divisors (see below), whose sum is σ = 9055360. Its totient is φ = 4414176.

The previous prime is 6706387. The next prime is 6706393. The reversal of 6706389 is 9836076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6706389 - 2¹ = 6706387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6706387) 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, 13912 + ... + 14385.

It is an arithmetic number, because the mean of its divisors is an integer number (1131920).

Almost surely, 2^6706389 is an apocalyptic number.

It is an amenable number.

6706389 is a deficient number, since it is larger than the sum of its proper divisors (2348971).

6706389 is a wasteful number, since it uses less digits than its factorization.

6706389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28379.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 6706389 is about 2589.6696700545. The cubic root of 6706389 is about 188.5802672789.

The spelling of 6706389 in words is "six million, seven hundred six thousand, three hundred eighty-nine".