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68350191 = 3713219259
BaseRepresentation
bin1000001001011…
…11000011101111
311202121112211120
410010233003233
5114444201231
610440552023
71456652460
oct404570357
9152545746
1068350191
1135644568
121aa82613
1311211900
149112d67
156001d96
hex412f0ef

68350191 has 24 divisors (see below), whose sum is σ = 112786560. Its totient is φ = 36050976.

The previous prime is 68350189. The next prime is 68350193. The reversal of 68350191 is 19105386.

It is an interprime number because it is at equal distance from previous prime (68350189) and next prime (68350193).

It is not a de Polignac number, because 68350191 - 21 = 68350189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68350193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6081 + ... + 13178.

It is an arithmetic number, because the mean of its divisors is an integer number (4699440).

Almost surely, 268350191 is an apocalyptic number.

68350191 is a deficient number, since it is larger than the sum of its proper divisors (44436369).

68350191 is a wasteful number, since it uses less digits than its factorization.

68350191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19295 (or 19282 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 68350191 is about 8267.4174323062. The cubic root of 68350191 is about 408.8649769604.

The spelling of 68350191 in words is "sixty-eight million, three hundred fifty thousand, one hundred ninety-one".

Divisors: 1 3 7 13 21 39 91 169 273 507 1183 3549 19259 57777 134813 250367 404439 751101 1752569 3254771 5257707 9764313 22783397 68350191