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680666808014 = 21791979651289
BaseRepresentation
bin10011110011110101110…
…01110011111011001110
32102001220211200111010022
421321322321303323032
542123001200324024
61240405523542142
7100114362256214
oct11717271637316
92361824614108
10680666808014
1124273a739386
12abb01b2a952
134c256c7c87b
1424d317d6cb4
1512a8bb5435e
hex9e7ae73ece

680666808014 has 16 divisors (see below), whose sum is σ = 1031915926800. Its totient is φ = 336714135744.

The previous prime is 680666807971. The next prime is 680666808037. The reversal of 680666808014 is 410808666086.

It is a super-3 number, since 3×6806668080143 (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4755119 + ... + 4896170.

It is an arithmetic number, because the mean of its divisors is an integer number (64494745425).

Almost surely, 2680666808014 is an apocalyptic number.

680666808014 is a deficient number, since it is larger than the sum of its proper divisors (351249118786).

680666808014 is a wasteful number, since it uses less digits than its factorization.

680666808014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9651667.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 680666808014 in words is "six hundred eighty billion, six hundred sixty-six million, eight hundred eight thousand, fourteen".

Divisors: 1 2 179 197 358 394 35263 70526 9651289 19302578 1727580731 1901303933 3455161462 3802607866 340333404007 680666808014