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689613060 = 223571161881
BaseRepresentation
bin101001000110101…
…010100100000100
31210001121222021110
4221012222210010
52403020104220
6152232445020
723042420463
oct5106524404
91701558243
10689613060
113242a5554
12172b49770
13acb43686
14678329da
154081ebe0
hex291aa904

689613060 has 48 divisors (see below), whose sum is σ = 1958124672. Its totient is φ = 181305600.

The previous prime is 689613031. The next prime is 689613083. The reversal of 689613060 is 60316986.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 76681 + ... + 85200.

It is an arithmetic number, because the mean of its divisors is an integer number (40794264).

Almost surely, 2689613060 is an apocalyptic number.

689613060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689613060 is an abundant number, since it is smaller than the sum of its proper divisors (1268511612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689613060 is a wasteful number, since it uses less digits than its factorization.

689613060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161964 (or 161962 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 689613060 is about 26260.4847632331. The cubic root of 689613060 is about 883.4903817914.

The spelling of 689613060 in words is "six hundred eighty-nine million, six hundred thirteen thousand, sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 71 142 213 284 355 426 710 852 1065 1420 2130 4260 161881 323762 485643 647524 809405 971286 1618810 1942572 2428215 3237620 4856430 9712860 11493551 22987102 34480653 45974204 57467755 68961306 114935510 137922612 172403265 229871020 344806530 689613060