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68368231 = 163607691
BaseRepresentation
bin1000001001100…
…11011101100111
311202122110120201
410010303131213
5120000240411
610441211331
71460056201
oct404633547
9152573521
1068368231
1135657078
121aa90b47
1311219b99
149119771
1560073c1
hex4133767

68368231 has 8 divisors (see below), whose sum is σ = 69000704. Its totient is φ = 67738680.

The previous prime is 68368177. The next prime is 68368247. The reversal of 68368231 is 13286386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68368231 - 27 = 68368103 is a prime.

It is a super-2 number, since 2×683682312 = 9348430020138722, 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 (68368931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98596 + ... + 99286.

It is an arithmetic number, because the mean of its divisors is an integer number (8625088).

Almost surely, 268368231 is an apocalyptic number.

68368231 is a deficient number, since it is larger than the sum of its proper divisors (632473).

68368231 is a wasteful number, since it uses less digits than its factorization.

68368231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461.

The product of its digits is 41472, while the sum is 37.

The square root of 68368231 is about 8268.5083902721. The cubic root of 68368231 is about 408.9009450402.

The spelling of 68368231 in words is "sixty-eight million, three hundred sixty-eight thousand, two hundred thirty-one".

Divisors: 1 163 607 691 98941 112633 419437 68368231