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68163807 = 379287611
BaseRepresentation
bin1000001000000…
…01100011011111
311202021002011110
410010001203133
5114422220212
610432553103
71455245205
oct404014337
9152232143
1068163807
1135527528
121a9b2793
1311177b1a
1490a5075
155eb6a3c
hex41018df

68163807 has 8 divisors (see below), whose sum is σ = 92035840. Its totient is φ = 44867160.

The previous prime is 68163803. The next prime is 68163841. The reversal of 68163807 is 70836186.

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

It is not a de Polignac number, because 68163807 - 22 = 68163803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68163803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143569 + ... + 144042.

It is an arithmetic number, because the mean of its divisors is an integer number (11504480).

Almost surely, 268163807 is an apocalyptic number.

68163807 is a deficient number, since it is larger than the sum of its proper divisors (23872033).

68163807 is a wasteful number, since it uses less digits than its factorization.

68163807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287693.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 68163807 is about 8256.1375351916. The cubic root of 68163807 is about 408.4929942713.

The spelling of 68163807 in words is "sixty-eight million, one hundred sixty-three thousand, eight hundred seven".

Divisors: 1 3 79 237 287611 862833 22721269 68163807