Base | Representation |
---|---|
bin | 10101000100011001100 |
3 | 1022002000122 |
4 | 2220203030 |
5 | 134043010 |
6 | 22444112 |
7 | 5603525 |
oct | 2504314 |
9 | 1262018 |
10 | 690380 |
11 | 431769 |
12 | 293638 |
13 | 1b2312 |
14 | 13d84c |
15 | d9855 |
hex | a88cc |
690380 has 12 divisors (see below), whose sum is σ = 1449840. Its totient is φ = 276144.
The previous prime is 690377. The next prime is 690397. The reversal of 690380 is 83096.
690380 = T523 + T524 + ... + T527.
It is a happy number.
It is a nialpdrome in base 15.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17240 + ... + 17279.
It is an arithmetic number, because the mean of its divisors is an integer number (120820).
2690380 is an apocalyptic number.
It is an amenable number.
690380 is an abundant number, since it is smaller than the sum of its proper divisors (759460).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
690380 is a wasteful number, since it uses less digits than its factorization.
690380 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 34528 (or 34526 counting only the distinct ones).
The product of its (nonzero) digits is 1296, while the sum is 26.
The square root of 690380 is about 830.8910879291. The cubic root of 690380 is about 88.3817779439.
The spelling of 690380 in words is "six hundred ninety thousand, three hundred eighty".
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