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69688 = 2331281
BaseRepresentation
bin10001000000111000
310112121001
4101000320
54212223
61254344
7410113
oct210070
9115531
1069688
11483a3
12343b4
1325948
141b57a
15159ad
hex11038

69688 has 16 divisors (see below), whose sum is σ = 135360. Its totient is φ = 33600.

The previous prime is 69677. The next prime is 69691. The reversal of 69688 is 88696.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108 + ... + 388.

It is an arithmetic number, because the mean of its divisors is an integer number (8460).

269688 is an apocalyptic number.

It is an amenable number.

69688 is a deficient number, since it is larger than the sum of its proper divisors (65672).

69688 is a wasteful number, since it uses less digits than its factorization.

69688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 314 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 69688 is about 263.9848480500. The cubic root of 69688 is about 41.1515312766.

It can be divided in two parts, 696 and 88, that added together give a square (784 = 282).

The spelling of 69688 in words is "sixty-nine thousand, six hundred eighty-eight".

Divisors: 1 2 4 8 31 62 124 248 281 562 1124 2248 8711 17422 34844 69688