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6900885 = 325153353
BaseRepresentation
bin11010010100110010010101
3110222121020100
4122110302111
53231312020
6403524313
7112441125
oct32246225
913877210
106900885
113993812
122389699
131578084
14cb8c85
15914a90
hex694c95

6900885 has 12 divisors (see below), whose sum is σ = 11961612. Its totient is φ = 3680448.

The previous prime is 6900877. The next prime is 6900889. The reversal of 6900885 is 5880096.

6900885 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4704561 + 2196324 = 2169^2 + 1482^2 .

It is not a de Polignac number, because 6900885 - 23 = 6900877 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6900889) 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 11 ways as a sum of consecutive naturals, for example, 76632 + ... + 76721.

It is an arithmetic number, because the mean of its divisors is an integer number (996801).

Almost surely, 26900885 is an apocalyptic number.

It is an amenable number.

6900885 is a deficient number, since it is larger than the sum of its proper divisors (5060727).

6900885 is a wasteful number, since it uses less digits than its factorization.

6900885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153364 (or 153361 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 6900885 is about 2626.9535587825. The cubic root of 6900885 is about 190.3859651902.

The spelling of 6900885 in words is "six million, nine hundred thousand, eight hundred eighty-five".

Divisors: 1 3 5 9 15 45 153353 460059 766765 1380177 2300295 6900885