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680865430 = 2579726649
BaseRepresentation
bin101000100101010…
…010111010010110
31202110011112210011
4220211102322112
52343300143210
6151321150434
722605155260
oct5045227226
91673145704
10680865430
1131a370303
1217002b41a
13ab09cb6b
14665d6b30
153eb92d8a
hex28952e96

680865430 has 16 divisors (see below), whose sum is σ = 1400637600. Its totient is φ = 233439552.

The previous prime is 680865421. The next prime is 680865439. The reversal of 680865430 is 34568086.

It is an interprime number because it is at equal distance from previous prime (680865421) and next prime (680865439).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680865439) 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, 4863255 + ... + 4863394.

It is an arithmetic number, because the mean of its divisors is an integer number (87539850).

Almost surely, 2680865430 is an apocalyptic number.

680865430 is an abundant number, since it is smaller than the sum of its proper divisors (719772170).

680865430 is a wasteful number, since it uses less digits than its factorization.

680865430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9726663.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 680865430 is about 26093.3982072094. The cubic root of 680865430 is about 879.7388300379.

The spelling of 680865430 in words is "six hundred eighty million, eight hundred sixty-five thousand, four hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 9726649 19453298 48633245 68086543 97266490 136173086 340432715 680865430