Base | Representation |
---|---|
bin | 1000001000011… |
… | …01111111110001 |
3 | 11202100200001221 |
4 | 10010031333301 |
5 | 114430333034 |
6 | 10434025041 |
7 | 1455546610 |
oct | 404157761 |
9 | 152320057 |
10 | 68214769 |
11 | 35561847 |
12 | 1aa18181 |
13 | 1119508c |
14 | 90b9877 |
15 | 5ec6bb4 |
hex | 410dff1 |
68214769 has 16 divisors (see below), whose sum is σ = 82298880. Its totient is φ = 55233360.
The previous prime is 68214767. The next prime is 68214781. The reversal of 68214769 is 96741286.
It is not a de Polignac number, because 68214769 - 21 = 68214767 is a prime.
It is a super-2 number, since 2×682147692 = 9306509419446722, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (68214767) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74424 + ... + 75334.
It is an arithmetic number, because the mean of its divisors is an integer number (5143680).
Almost surely, 268214769 is an apocalyptic number.
It is an amenable number.
68214769 is a deficient number, since it is larger than the sum of its proper divisors (14084111).
68214769 is a wasteful number, since it uses less digits than its factorization.
68214769 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1500.
The product of its digits is 145152, while the sum is 43.
The square root of 68214769 is about 8259.2232685647. The cubic root of 68214769 is about 408.5947708348.
It can be divided in two parts, 682 and 14769, that added together give a palindrome (15451).
The spelling of 68214769 in words is "sixty-eight million, two hundred fourteen thousand, seven hundred sixty-nine".
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