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68607738 = 2323811541
BaseRepresentation
bin1000001011011…
…01111011111010
311210002122010100
410011231323322
5120030421423
610450300230
71462104363
oct405557372
9153078110
1068607738
1135800011
121ab87676
13112a1bc4
14917cb6a
156053343
hex416defa

68607738 has 12 divisors (see below), whose sum is σ = 148650138. Its totient is φ = 22869240.

The previous prime is 68607701. The next prime is 68607751. The reversal of 68607738 is 83770686.

68607738 is a `hidden beast` number, since 6 + 8 + 607 + 7 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52229529 + 16378209 = 7227^2 + 4047^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68607693 and 68607702.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1905753 + ... + 1905788.

Almost surely, 268607738 is an apocalyptic number.

68607738 is an abundant number, since it is smaller than the sum of its proper divisors (80042400).

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

68607738 is a wasteful number, since it uses less digits than its factorization.

68607738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811549 (or 3811546 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 68607738 is about 8282.9788119975. The cubic root of 68607738 is about 409.3778746414.

The spelling of 68607738 in words is "sixty-eight million, six hundred seven thousand, seven hundred thirty-eight".

Divisors: 1 2 3 6 9 18 3811541 7623082 11434623 22869246 34303869 68607738