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680913550 = 25213618271
BaseRepresentation
bin101000100101011…
…110101010001110
31202110020222210101
4220211132222032
52343303213200
6151322201314
722605445462
oct5045365216
91673228711
10680913550
1131a3a3479
1217005323a
13ab0b8a35
146660a4a2
153eba226a
hex2895ea8e

680913550 has 12 divisors (see below), whose sum is σ = 1266499296. Its totient is φ = 272365400.

The previous prime is 680913539. The next prime is 680913577. The reversal of 680913550 is 55319086.

680913550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6809086 + ... + 6809185.

It is an arithmetic number, because the mean of its divisors is an integer number (105541608).

Almost surely, 2680913550 is an apocalyptic number.

680913550 is a deficient number, since it is larger than the sum of its proper divisors (585585746).

680913550 is a wasteful number, since it uses less digits than its factorization.

680913550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13618283 (or 13618278 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 680913550 is about 26094.3202632297. The cubic root of 680913550 is about 879.7595546595.

The spelling of 680913550 in words is "six hundred eighty million, nine hundred thirteen thousand, five hundred fifty".

Divisors: 1 2 5 10 25 50 13618271 27236542 68091355 136182710 340456775 680913550