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68677755 = 354578517
BaseRepresentation
bin1000001011111…
…11000001111011
311210020012011120
410011333001323
5120040142010
610452000323
71462515456
oct405770173
9153205146
1068677755
1135848683
121b0000a3
13112c7a33
14919a49d
156068e70
hex417f07b

68677755 has 8 divisors (see below), whose sum is σ = 109884432. Its totient is φ = 36628128.

The previous prime is 68677753. The next prime is 68677759. The reversal of 68677755 is 55777686.

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

It is not a de Polignac number, because 68677755 - 21 = 68677753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68677698 and 68677707.

It is not an unprimeable number, because it can be changed into a prime (68677753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2289244 + ... + 2289273.

It is an arithmetic number, because the mean of its divisors is an integer number (13735554).

Almost surely, 268677755 is an apocalyptic number.

68677755 is a deficient number, since it is larger than the sum of its proper divisors (41206677).

68677755 is a wasteful number, since it uses less digits than its factorization.

68677755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578525.

The product of its digits is 2469600, while the sum is 51.

The square root of 68677755 is about 8287.2042933670. The cubic root of 68677755 is about 409.5170895768.

The spelling of 68677755 in words is "sixty-eight million, six hundred seventy-seven thousand, seven hundred fifty-five".

Divisors: 1 3 5 15 4578517 13735551 22892585 68677755