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68445841 = 591796481
BaseRepresentation
bin1000001010001…
…10011010010001
311202210102001011
410011012122101
5120010231331
610443010521
71460531362
oct405063221
9152712034
1068445841
11356aa412
121ab09a41
13112462c9
149139b69
1560203b1
hex4146691

68445841 has 8 divisors (see below), whose sum is σ = 70005600. Its totient is φ = 66899520.

The previous prime is 68445827. The next prime is 68445857. The reversal of 68445841 is 14854486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68445841 - 29 = 68445329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68445794 and 68445803.

It is not an unprimeable number, because it can be changed into a prime (68445541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7321 + ... + 13801.

It is an arithmetic number, because the mean of its divisors is an integer number (8750700).

Almost surely, 268445841 is an apocalyptic number.

It is an amenable number.

68445841 is a deficient number, since it is larger than the sum of its proper divisors (1559759).

68445841 is a wasteful number, since it uses less digits than its factorization.

68445841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6719.

The product of its digits is 122880, while the sum is 40.

The square root of 68445841 is about 8273.2001668037. The cubic root of 68445841 is about 409.0556114266.

The spelling of 68445841 in words is "sixty-eight million, four hundred forty-five thousand, eight hundred forty-one".

Divisors: 1 59 179 6481 10561 382379 1160099 68445841