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68986 = 2172029
BaseRepresentation
bin10000110101111010
310111122001
4100311322
54201421
61251214
7405061
oct206572
9114561
1068986
1147915
1233b0a
1325528
141b1d8
1515691
hex10d7a

68986 has 8 divisors (see below), whose sum is σ = 109620. Its totient is φ = 32448.

The previous prime is 68963. The next prime is 68993.

68986 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 53361 + 15625 = 231^2 + 125^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981 + ... + 1048.

268986 is an apocalyptic number.

68986 is a deficient number, since it is larger than the sum of its proper divisors (40634).

68986 is a wasteful number, since it uses less digits than its factorization.

68986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048.

The product of its digits is 20736, while the sum is 37.

The square root of 68986 is about 262.6518608348. The cubic root of 68986 is about 41.0128851034.

The spelling of 68986 in words is "sixty-eight thousand, nine hundred eighty-six".

Divisors: 1 2 17 34 2029 4058 34493 68986