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68317053 = 375361381
BaseRepresentation
bin1000001001001…
…10111101111101
311202112212101020
410010212331331
5114442121203
610440134353
71456454040
oct404467575
9152485336
1068317053
1135621682
121aa673b9
13111cc7bc
149104c57
155ee7153
hex4126f7d

68317053 has 16 divisors (see below), whose sum is σ = 106068096. Its totient is φ = 38301120.

The previous prime is 68317043. The next prime is 68317057. The reversal of 68317053 is 35071386.

It is a happy number.

It is not a de Polignac number, because 68317053 - 24 = 68317037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68317057) 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, 29578 + ... + 31803.

It is an arithmetic number, because the mean of its divisors is an integer number (6629256).

Almost surely, 268317053 is an apocalyptic number.

It is an amenable number.

68317053 is a deficient number, since it is larger than the sum of its proper divisors (37751043).

68317053 is a wasteful number, since it uses less digits than its factorization.

68317053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61444.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 68317053 is about 8265.4130568290. The cubic root of 68317053 is about 408.7988900550.

The spelling of 68317053 in words is "sixty-eight million, three hundred seventeen thousand, fifty-three".

Divisors: 1 3 7 21 53 159 371 1113 61381 184143 429667 1289001 3253193 9759579 22772351 68317053