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680648710 = 25723144809
BaseRepresentation
bin101000100100011…
…110000000000110
31202102202112111111
4220210132000012
52343221224320
6151312355234
722603263400
oct5044360006
91672675444
10680648710
1131a2324a5
1216bb45b1a
13ab025321
146657bb70
153eb4da5a
hex2891e006

680648710 has 48 divisors (see below), whose sum is σ = 1471201920. Its totient is φ = 225832320.

The previous prime is 680648699. The next prime is 680648711. The reversal of 680648710 is 17846086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680648711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7215 + ... + 37594.

It is an arithmetic number, because the mean of its divisors is an integer number (30650040).

Almost surely, 2680648710 is an apocalyptic number.

680648710 is an abundant number, since it is smaller than the sum of its proper divisors (790553210).

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

680648710 is a wasteful number, since it uses less digits than its factorization.

680648710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44861 (or 44854 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 680648710 is about 26089.2451021489. The cubic root of 680648710 is about 879.6454796130.

The spelling of 680648710 in words is "six hundred eighty million, six hundred forty-eight thousand, seven hundred ten".

Divisors: 1 2 5 7 10 14 31 35 49 62 70 98 155 217 245 310 434 490 1085 1519 2170 3038 7595 15190 44809 89618 224045 313663 448090 627326 1389079 1568315 2195641 2778158 3136630 4391282 6945395 9723553 10978205 13890790 19447106 21956410 48617765 68064871 97235530 136129742 340324355 680648710