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68702101 = 1341157821
BaseRepresentation
bin1000001100001…
…00111110010101
311210021102120021
410012010332111
5120041431401
610452305141
71462646446
oct406047625
9153242507
1068702101
11358649a6
121b0121b1
1311305b40
1491a52cd
1560712a1
hex4184f95

68702101 has 16 divisors (see below), whose sum is σ = 76367088. Its totient is φ = 61401600.

The previous prime is 68702057. The next prime is 68702129. The reversal of 68702101 is 10120786.

It can be written as a sum of positive squares in 8 ways, for example, as 28633201 + 40068900 = 5351^2 + 6330^2 .

It is not a de Polignac number, because 68702101 - 27 = 68701973 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 (68702141) 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, 83271 + ... + 84091.

It is an arithmetic number, because the mean of its divisors is an integer number (4772943).

Almost surely, 268702101 is an apocalyptic number.

It is an amenable number.

68702101 is a deficient number, since it is larger than the sum of its proper divisors (7664987).

68702101 is a wasteful number, since it uses less digits than its factorization.

68702101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 68702101 is about 8288.6730542349. The cubic root of 68702101 is about 409.5654746042.

Adding to 68702101 its reverse (10120786), we get a palindrome (78822887).

The spelling of 68702101 in words is "sixty-eight million, seven hundred two thousand, one hundred one".

Divisors: 1 13 41 157 533 821 2041 6437 10673 33661 83681 128897 437593 1675661 5284777 68702101