Search a number
-
+
6720469 = 75931619
BaseRepresentation
bin11001101000101111010101
3110122102202021
4121220233111
53210023334
6400013141
7111060130
oct31505725
913572667
106720469
113880208
1223011b1
131513c12
14c6d217
158cb3b4
hex668bd5

6720469 has 8 divisors (see below), whose sum is σ = 7698240. Its totient is φ = 5747136.

The previous prime is 6720443. The next prime is 6720473. The reversal of 6720469 is 9640276.

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

It is a cyclic number.

It is not a de Polignac number, because 6720469 - 25 = 6720437 is a prime.

It is a super-2 number, since 2×67204692 = 90329407159922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3342 + ... + 4960.

It is an arithmetic number, because the mean of its divisors is an integer number (962280).

Almost surely, 26720469 is an apocalyptic number.

It is an amenable number.

6720469 is a deficient number, since it is larger than the sum of its proper divisors (977771).

6720469 is a wasteful number, since it uses less digits than its factorization.

6720469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 6720469 is about 2592.3867381238. The cubic root of 6720469 is about 188.7121491869.

The spelling of 6720469 in words is "six million, seven hundred twenty thousand, four hundred sixty-nine".

Divisors: 1 7 593 1619 4151 11333 960067 6720469