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680210879 = 2233538641
BaseRepresentation
bin101000100010110…
…011000110111111
31202101221021220112
4220202303012333
52343113222004
6151255140235
722566461045
oct5042630677
91671837815
10680210879
11319a63557
1216b97467b
13aac00c5a
14664a6395
153eab3e6e
hex288b31bf

680210879 has 8 divisors (see below), whose sum is σ = 685276032. Its totient is φ = 675164160.

The previous prime is 680210831. The next prime is 680210893. The reversal of 680210879 is 978012086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-680210879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680210779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74399 + ... + 83039.

It is an arithmetic number, because the mean of its divisors is an integer number (85659504).

Almost surely, 2680210879 is an apocalyptic number.

680210879 is a deficient number, since it is larger than the sum of its proper divisors (5065153).

680210879 is a wasteful number, since it uses less digits than its factorization.

680210879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9217.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 680210879 is about 26080.8527276238. The cubic root of 680210879 is about 879.4568269036.

The spelling of 680210879 in words is "six hundred eighty million, two hundred ten thousand, eight hundred seventy-nine".

Divisors: 1 223 353 8641 78719 1926943 3050273 680210879