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68595919 = 780912113
BaseRepresentation
bin1000001011010…
…11000011001111
311210002000220121
410011223003033
5120030032134
610450125411
71462025050
oct405530317
9153060817
1068595919
11357a2147
121ab80867
1311299702
149178727
15604eab4
hex416b0cf

68595919 has 8 divisors (see below), whose sum is σ = 78498720. Its totient is φ = 58718976.

The previous prime is 68595893. The next prime is 68595929. The reversal of 68595919 is 91959586.

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

It is a cyclic number.

It is not a de Polignac number, because 68595919 - 25 = 68595887 is a prime.

It is a super-2 number, since 2×685959192 = 9410800206909122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68595929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394 + ... + 11719.

It is an arithmetic number, because the mean of its divisors is an integer number (9812340).

Almost surely, 268595919 is an apocalyptic number.

68595919 is a deficient number, since it is larger than the sum of its proper divisors (9902801).

68595919 is a wasteful number, since it uses less digits than its factorization.

68595919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12929.

The product of its digits is 874800, while the sum is 52.

The square root of 68595919 is about 8282.2653302101. The cubic root of 68595919 is about 409.3543655586.

The spelling of 68595919 in words is "sixty-eight million, five hundred ninety-five thousand, nine hundred nineteen".

Divisors: 1 7 809 5663 12113 84791 9799417 68595919