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68745117 = 3710333169
BaseRepresentation
bin1000001100011…
…11011110011101
311210100121120110
410012033132131
5120044320432
610453240233
71463216040
oct406173635
9153317513
1068745117
1135894251
121b033079
131131c5ac
1491b6c57
15607ddcc
hex418f79d

68745117 has 16 divisors (see below), whose sum is σ = 104888960. Its totient is φ = 39232512.

The previous prime is 68745107. The next prime is 68745133. The reversal of 68745117 is 71154786.

It is not a de Polignac number, because 68745117 - 211 = 68743069 is a prime.

It is a super-2 number, since 2×687451172 = 9451782222687378, 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 (68745107) 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, 20109 + ... + 23277.

It is an arithmetic number, because the mean of its divisors is an integer number (6555560).

Almost surely, 268745117 is an apocalyptic number.

It is an amenable number.

68745117 is a deficient number, since it is larger than the sum of its proper divisors (36143843).

68745117 is a wasteful number, since it uses less digits than its factorization.

68745117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212.

The product of its digits is 47040, while the sum is 39.

The square root of 68745117 is about 8291.2675146807. The cubic root of 68745117 is about 409.6509362931.

The spelling of 68745117 in words is "sixty-eight million, seven hundred forty-five thousand, one hundred seventeen".

Divisors: 1 3 7 21 1033 3099 3169 7231 9507 21693 22183 66549 3273577 9820731 22915039 68745117