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68671063 = 81478429
BaseRepresentation
bin1000001011111…
…01011001010111
311210012211222201
410011331121113
5120034433223
610451505331
71462460116
oct405753127
9153184881
1068671063
113584364a
121abb8247
13112c4986
149197c7d
156066ead
hex417d657

68671063 has 4 divisors (see below), whose sum is σ = 68687640. Its totient is φ = 68654488.

The previous prime is 68671049. The next prime is 68671067. The reversal of 68671063 is 36017686.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 36017686 = 218008843.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68671063 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 (68671067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3933 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (17171910).

Almost surely, 268671063 is an apocalyptic number.

68671063 is a deficient number, since it is larger than the sum of its proper divisors (16577).

68671063 is an equidigital number, since it uses as much as digits as its factorization.

68671063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16576.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 68671063 is about 8286.8005285514. The cubic root of 68671063 is about 409.5037879510.

The spelling of 68671063 in words is "sixty-eight million, six hundred seventy-one thousand, sixty-three".

Divisors: 1 8147 8429 68671063