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68023141 = 411659101
BaseRepresentation
bin1000000110111…
…11001101100101
311201222221012121
410003133031211
5114403220031
610425545541
71454121124
oct403371545
9151887177
1068023141
113544087a
121a9452b1
1311128aa4
149069abb
155e8a011
hex40df365

68023141 has 4 divisors (see below), whose sum is σ = 69682284. Its totient is φ = 66364000.

The previous prime is 68023139. The next prime is 68023159. The reversal of 68023141 is 14132086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20702500 + 47320641 = 4550^2 + 6879^2 .

It is a cyclic number.

It is not a de Polignac number, because 68023141 - 21 = 68023139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68023741) 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, 829510 + ... + 829591.

It is an arithmetic number, because the mean of its divisors is an integer number (17420571).

Almost surely, 268023141 is an apocalyptic number.

It is an amenable number.

68023141 is a deficient number, since it is larger than the sum of its proper divisors (1659143).

68023141 is a wasteful number, since it uses less digits than its factorization.

68023141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659142.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 68023141 is about 8247.6142611061. The cubic root of 68023141 is about 408.2118057154.

The spelling of 68023141 in words is "sixty-eight million, twenty-three thousand, one hundred forty-one".

Divisors: 1 41 1659101 68023141