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68115873 = 373243613
BaseRepresentation
bin1000000111101…
…01110110100001
311202011122102010
410003311312201
5114414201443
610431543133
71454655360
oct403656641
9152148363
1068115873
11354a4511
121a98aaa9
131115c067
1490917d7
155ea7733
hex40f5da1

68115873 has 8 divisors (see below), whose sum is σ = 103795648. Its totient is φ = 38923344.

The previous prime is 68115871. The next prime is 68115877. The reversal of 68115873 is 37851186.

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

It is not a de Polignac number, because 68115873 - 21 = 68115871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68115871) 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, 1621786 + ... + 1621827.

It is an arithmetic number, because the mean of its divisors is an integer number (12974456).

Almost surely, 268115873 is an apocalyptic number.

It is an amenable number.

68115873 is a deficient number, since it is larger than the sum of its proper divisors (35679775).

68115873 is a wasteful number, since it uses less digits than its factorization.

68115873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243623.

The product of its digits is 40320, while the sum is 39.

The square root of 68115873 is about 8253.2340933721. The cubic root of 68115873 is about 408.3972186406.

The spelling of 68115873 in words is "sixty-eight million, one hundred fifteen thousand, eight hundred seventy-three".

Divisors: 1 3 7 21 3243613 9730839 22705291 68115873