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6912013 = 17223917
BaseRepresentation
bin11010010111100000001101
3111000011111111
4122113200031
53232141023
6404052021
7112515433
oct32274015
914004444
106912013
1139a1109
122394011
131580164
14cbcd53
1591800d
hex69780d

6912013 has 6 divisors (see below), whose sum is σ = 7342826. Its totient is φ = 6505152.

The previous prime is 6912011. The next prime is 6912019. The reversal of 6912013 is 3102196.

It can be written as a sum of positive squares in 3 ways, for example, as 3175524 + 3736489 = 1782^2 + 1933^2 .

It is not a de Polignac number, because 6912013 - 21 = 6912011 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6912011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11670 + ... + 12247.

Almost surely, 26912013 is an apocalyptic number.

It is an amenable number.

6912013 is a deficient number, since it is larger than the sum of its proper divisors (430813).

6912013 is a wasteful number, since it uses less digits than its factorization.

6912013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23951 (or 23934 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 6912013 is about 2629.0707483824. The cubic root of 6912013 is about 190.4882456586.

It can be divided in two parts, 691 and 2013, that added together give a square (2704 = 522).

The spelling of 6912013 in words is "six million, nine hundred twelve thousand, thirteen".

Divisors: 1 17 289 23917 406589 6912013