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68816119 = 1719257829
BaseRepresentation
bin1000001101000…
…00110011110111
311210111012222011
410012200303313
5120104103434
610454545051
71463633041
oct406406367
9153435864
1068816119
1135932629
121b068187
13113459c8
1491d4a91
156094e64
hex41a0cf7

68816119 has 16 divisors (see below), whose sum is σ = 77090400. Its totient is φ = 61046784.

The previous prime is 68816117. The next prime is 68816149. The reversal of 68816119 is 91161886.

It is a cyclic number.

It is not a de Polignac number, because 68816119 - 21 = 68816117 is a prime.

It is a super-2 number, since 2×688161192 = 9471316468444322, 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 (68816117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82597 + ... + 83425.

It is an arithmetic number, because the mean of its divisors is an integer number (4818150).

Almost surely, 268816119 is an apocalyptic number.

68816119 is a deficient number, since it is larger than the sum of its proper divisors (8274281).

68816119 is a wasteful number, since it uses less digits than its factorization.

68816119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122.

The product of its digits is 20736, while the sum is 40.

The square root of 68816119 is about 8295.5481434321. The cubic root of 68816119 is about 409.7919209872.

It can be divided in two parts, 688 and 16119, that added together give a 5-th power (16807 = 75).

The spelling of 68816119 in words is "sixty-eight million, eight hundred sixteen thousand, one hundred nineteen".

Divisors: 1 17 19 257 323 829 4369 4883 14093 15751 83011 213053 267767 3621901 4048007 68816119