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68105077 = 1743151617
BaseRepresentation
bin1000000111100…
…11001101110101
311202011002121021
410003303031311
5114413330302
610431421141
71454612035
oct403631565
9152132537
1068105077
1135497397
121a9847b1
1311157181
14908b8c5
155ea4437
hex40f3375

68105077 has 16 divisors (see below), whose sum is σ = 74397312. Its totient is φ = 62092800.

The previous prime is 68105027. The next prime is 68105087. The reversal of 68105077 is 77050186.

It is a cyclic number.

It is not a de Polignac number, because 68105077 - 211 = 68103029 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 (68105027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110073 + ... + 110689.

It is an arithmetic number, because the mean of its divisors is an integer number (4649832).

Almost surely, 268105077 is an apocalyptic number.

It is an amenable number.

68105077 is a deficient number, since it is larger than the sum of its proper divisors (6292235).

68105077 is a wasteful number, since it uses less digits than its factorization.

68105077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 68105077 is about 8252.5800208177. The cubic root of 68105077 is about 408.3756412454.

The spelling of 68105077 in words is "sixty-eight million, one hundred five thousand, seventy-seven".

Divisors: 1 17 43 151 617 731 2567 6493 10489 26531 93167 110381 451027 1583839 4006181 68105077