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68911017 = 3710331859
BaseRepresentation
bin1000001101101…
…11111110101001
311210200001010220
410012313332221
5120120123032
610501000253
71464506520
oct406677651
9153601126
1068911017
113599795a
121b0b3089
1311379c66
14921b4b7
1560b312c
hex41b7fa9

68911017 has 16 divisors (see below), whose sum is σ = 106030080. Its totient is φ = 38994192.

The previous prime is 68911001. The next prime is 68911033. The reversal of 68911017 is 71011986.

It is an interprime number because it is at equal distance from previous prime (68911001) and next prime (68911033).

It is not a de Polignac number, because 68911017 - 24 = 68911001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68911067) 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, 13767 + ... + 18092.

It is an arithmetic number, because the mean of its divisors is an integer number (6626880).

Almost surely, 268911017 is an apocalyptic number.

It is an amenable number.

68911017 is a deficient number, since it is larger than the sum of its proper divisors (37119063).

68911017 is a wasteful number, since it uses less digits than its factorization.

68911017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31972.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 68911017 is about 8301.2659877876. The cubic root of 68911017 is about 409.9802032876.

The spelling of 68911017 in words is "sixty-eight million, nine hundred eleven thousand, seventeen".

Divisors: 1 3 7 21 103 309 721 2163 31859 95577 223013 669039 3281477 9844431 22970339 68911017