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68180847 = 373246707
BaseRepresentation
bin1000001000001…
…01101101101111
311202021221112120
410010011231233
5114423241342
610433204023
71455345660
oct404055557
9152257476
1068180847
1135539309
121aa00613
13111827c7
1490ab367
155ebbaec
hex4105b6f

68180847 has 8 divisors (see below), whose sum is σ = 103894656. Its totient is φ = 38960472.

The previous prime is 68180837. The next prime is 68180867. The reversal of 68180847 is 74808186.

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

It is not a de Polignac number, because 68180847 - 218 = 67918703 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68180799 and 68180808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68180837) 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, 1623333 + ... + 1623374.

It is an arithmetic number, because the mean of its divisors is an integer number (12986832).

Almost surely, 268180847 is an apocalyptic number.

68180847 is a deficient number, since it is larger than the sum of its proper divisors (35713809).

68180847 is a wasteful number, since it uses less digits than its factorization.

68180847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246717.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 68180847 is about 8257.1694302588. The cubic root of 68180847 is about 408.5270306169.

The spelling of 68180847 in words is "sixty-eight million, one hundred eighty thousand, eight hundred forty-seven".

Divisors: 1 3 7 21 3246707 9740121 22726949 68180847