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68297 = 163419
BaseRepresentation
bin10000101011001001
310110200112
4100223021
54141142
61244105
7403055
oct205311
9113615
1068297
1147349
1233635
1325118
141ac65
1515382
hex10ac9

68297 has 4 divisors (see below), whose sum is σ = 68880. Its totient is φ = 67716.

The previous prime is 68281. The next prime is 68311. The reversal of 68297 is 79286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 68297 - 24 = 68281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47 + ... + 372.

It is an arithmetic number, because the mean of its divisors is an integer number (17220).

268297 is an apocalyptic number.

It is an amenable number.

68297 is a deficient number, since it is larger than the sum of its proper divisors (583).

68297 is a wasteful number, since it uses less digits than its factorization.

68297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582.

The product of its digits is 6048, while the sum is 32.

The square root of 68297 is about 261.3369472539. The cubic root of 68297 is about 40.8758888103.

Subtracting from 68297 its sum of digits (32), we obtain a triangular number (68265 = T369).

The spelling of 68297 in words is "sixty-eight thousand, two hundred ninety-seven".

Divisors: 1 163 419 68297