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680048776 = 23117727827
BaseRepresentation
bin101000100010001…
…011100010001000
31202101122001112201
4220202023202020
52343043030101
6151251445544
722565214331
oct5042134210
91671561481
10680048776
11319962790
1216b8b68b4
13aab75234
1466463288
153ea80e01
hex2888b888

680048776 has 16 divisors (see below), whose sum is σ = 1391009040. Its totient is φ = 309113040.

The previous prime is 680048771. The next prime is 680048819. The reversal of 680048776 is 677840086.

It is not an unprimeable number, because it can be changed into a prime (680048771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3863826 + ... + 3864001.

It is an arithmetic number, because the mean of its divisors is an integer number (86938065).

Almost surely, 2680048776 is an apocalyptic number.

It is an amenable number.

680048776 is an abundant number, since it is smaller than the sum of its proper divisors (710960264).

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

680048776 is a wasteful number, since it uses less digits than its factorization.

680048776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727844 (or 7727840 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 680048776 is about 26077.7448411476. The cubic root of 680048776 is about 879.3869593960.

The spelling of 680048776 in words is "six hundred eighty million, forty-eight thousand, seven hundred seventy-six".

Divisors: 1 2 4 8 11 22 44 88 7727827 15455654 30911308 61822616 85006097 170012194 340024388 680048776