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680384647976 = 23117731643727
BaseRepresentation
bin10011110011010100001…
…01011101001100101000
32102001012011202021022112
421321222011131030220
542121411432213401
61240321524141452
7100104365041205
oct11715205351450
92361164667275
10680384647976
1124260543a370
12aba43537888
134c210689c77
1424d06148cac
1512a71ebb3bb
hex9e6a15d328

680384647976 has 16 divisors (see below), whose sum is σ = 1391695871040. Its totient is φ = 309265749040.

The previous prime is 680384647961. The next prime is 680384648011. The reversal of 680384647976 is 679746483086.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3865821776 + ... + 3865821951.

It is an arithmetic number, because the mean of its divisors is an integer number (86980991940).

Almost surely, 2680384647976 is an apocalyptic number.

It is an amenable number.

680384647976 is an abundant number, since it is smaller than the sum of its proper divisors (711311223064).

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

680384647976 is a wasteful number, since it uses less digits than its factorization.

680384647976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731643744 (or 7731643740 counting only the distinct ones).

The product of its (nonzero) digits is 292626432, while the sum is 68.

The spelling of 680384647976 in words is "six hundred eighty billion, three hundred eighty-four million, six hundred forty-seven thousand, nine hundred seventy-six".

Divisors: 1 2 4 8 11 22 44 88 7731643727 15463287454 30926574908 61853149816 85048080997 170096161994 340192323988 680384647976