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68269 = 233293
BaseRepresentation
bin10000101010101101
310110122111
4100222231
54141034
61244021
7403015
oct205255
9113574
1068269
1147323
1233611
13250c6
141ac45
1515364
hex10aad

68269 has 4 divisors (see below), whose sum is σ = 68796. Its totient is φ = 67744.

The previous prime is 68261. The next prime is 68279. The reversal of 68269 is 96286.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 42025 + 26244 = 205^2 + 162^2 .

It is a cyclic number.

It is not a de Polignac number, because 68269 - 23 = 68261 is a prime.

It is a super-2 number, since 2×682692 = 9321312722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87 + ... + 379.

It is an arithmetic number, because the mean of its divisors is an integer number (17199).

268269 is an apocalyptic number.

It is an amenable number.

68269 is a deficient number, since it is larger than the sum of its proper divisors (527).

68269 is a wasteful number, since it uses less digits than its factorization.

68269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526.

The product of its digits is 5184, while the sum is 31.

The square root of 68269 is about 261.2833710744. The cubic root of 68269 is about 40.8703020284.

The spelling of 68269 in words is "sixty-eight thousand, two hundred sixty-nine".

Divisors: 1 233 293 68269