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68045 = 531439
BaseRepresentation
bin10000100111001101
310110100012
4100213031
54134140
61243005
7402245
oct204715
9113305
1068045
114713a
1233465
1324c83
141ab25
1515265
hex109cd

68045 has 8 divisors (see below), whose sum is σ = 84480. Its totient is φ = 52560.

The previous prime is 68041. The next prime is 68053. The reversal of 68045 is 54086.

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

It is not a de Polignac number, because 68045 - 22 = 68041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68041) 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, 65 + ... + 374.

It is an arithmetic number, because the mean of its divisors is an integer number (10560).

268045 is an apocalyptic number.

It is an amenable number.

68045 is a deficient number, since it is larger than the sum of its proper divisors (16435).

68045 is a wasteful number, since it uses less digits than its factorization.

68045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 68045 is about 260.8543654992. The cubic root of 68045 is about 40.8255526848.

The spelling of 68045 in words is "sixty-eight thousand, forty-five".

Divisors: 1 5 31 155 439 2195 13609 68045