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68341181 = 85979559
BaseRepresentation
bin1000001001011…
…00110110111101
311202121002110212
410010230312331
5114443404211
610440442205
71456614266
oct404546675
9152532425
1068341181
1135638817
121aa79365
131120a78c
14910d96d
155eee38b
hex412cdbd

68341181 has 4 divisors (see below), whose sum is σ = 68421600. Its totient is φ = 68260764.

The previous prime is 68341171. The next prime is 68341187. The reversal of 68341181 is 18114386.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68341181 - 222 = 64146877 is a prime.

It is a super-2 number, since 2×683411812 = 9341034040949522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68341187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38921 + ... + 40638.

It is an arithmetic number, because the mean of its divisors is an integer number (17105400).

Almost surely, 268341181 is an apocalyptic number.

It is an amenable number.

68341181 is a deficient number, since it is larger than the sum of its proper divisors (80419).

68341181 is an equidigital number, since it uses as much as digits as its factorization.

68341181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80418.

The product of its digits is 4608, while the sum is 32.

The square root of 68341181 is about 8266.8725041578. The cubic root of 68341181 is about 408.8470104887.

The spelling of 68341181 in words is "sixty-eight million, three hundred forty-one thousand, one hundred eighty-one".

Divisors: 1 859 79559 68341181