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7668680 = 235191717
BaseRepresentation
bin11101010000001111001000
3112102121110012
4131100033020
53430344210
6432211052
7122116445
oct35201710
915377405
107668680
114368658
122699a88
1317866a6
1410389cc
15a17305
hex7503c8

7668680 has 16 divisors (see below), whose sum is σ = 17254620. Its totient is φ = 3067456.

The previous prime is 7668677. The next prime is 7668691. The reversal of 7668680 is 868667.

It can be written as a sum of positive squares in 2 ways, for example, as 7540516 + 128164 = 2746^2 + 358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95819 + ... + 95898.

Almost surely, 27668680 is an apocalyptic number.

It is an amenable number.

7668680 is an abundant number, since it is smaller than the sum of its proper divisors (9585940).

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

7668680 is a wasteful number, since it uses less digits than its factorization.

7668680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191728 (or 191724 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 7668680 is about 2769.2381623833. The cubic root of 7668680 is about 197.1999824452.

The spelling of 7668680 in words is "seven million, six hundred sixty-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 191717 383434 766868 958585 1533736 1917170 3834340 7668680