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74680806680 = 2353160226457
BaseRepresentation
bin100010110001101010…
…0101010110100011000
321010202122010001111222
41011203110222310120
52210421241303210
654150300511212
75252442245234
oct1054324526430
9233678101458
1074680806680
1129743406447
121258254b508
13707211824c
1438865495c4
151e21516655
hex116352ad18

74680806680 has 32 divisors (see below), whose sum is σ = 173452199040. Its totient is φ = 28908698880.

The previous prime is 74680806679. The next prime is 74680806703. The reversal of 74680806680 is 8660808647.

It is a happy number.

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, 30111989 + ... + 30114468.

It is an arithmetic number, because the mean of its divisors is an integer number (5420381220).

Almost surely, 274680806680 is an apocalyptic number.

It is an amenable number.

74680806680 is an abundant number, since it is smaller than the sum of its proper divisors (98771392360).

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

74680806680 is a wasteful number, since it uses less digits than its factorization.

74680806680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60226499 (or 60226495 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 74680806680 in words is "seventy-four billion, six hundred eighty million, eight hundred six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 155 248 310 620 1240 60226457 120452914 240905828 301132285 481811656 602264570 1204529140 1867020167 2409058280 3734040334 7468080668 9335100835 14936161336 18670201670 37340403340 74680806680