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68454315 = 355103547
BaseRepresentation
bin1000001010010…
…00011110101011
311202210211200000
410011020132223
5120011014230
610443114043
71460565156
oct405103653
9152724600
1068454315
1135705816
121ab12923
131124a117
14913cc9d
156022b60
hex41487ab

68454315 has 48 divisors (see below), whose sum is σ = 124470528. Its totient is φ = 36088416.

The previous prime is 68454311. The next prime is 68454341. The reversal of 68454315 is 51345486.

It is a happy number.

It is not a de Polignac number, because 68454315 - 22 = 68454311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68454315.

It is not an unprimeable number, because it can be changed into a prime (68454311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124872 + ... + 125418.

It is an arithmetic number, because the mean of its divisors is an integer number (2593136).

Almost surely, 268454315 is an apocalyptic number.

68454315 is a deficient number, since it is larger than the sum of its proper divisors (56016213).

68454315 is a wasteful number, since it uses less digits than its factorization.

68454315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 658 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 68454315 is about 8273.7122865132. The cubic root of 68454315 is about 409.0724918981.

The spelling of 68454315 in words is "sixty-eight million, four hundred fifty-four thousand, three hundred fifteen".

Divisors: 1 3 5 9 15 27 45 81 103 135 243 309 405 515 547 927 1215 1545 1641 2735 2781 4635 4923 8205 8343 13905 14769 24615 25029 41715 44307 56341 73845 125145 132921 169023 221535 281705 507069 664605 845115 1521207 2535345 4563621 7606035 13690863 22818105 68454315