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12663109 = 167191397
BaseRepresentation
bin110000010011…
…100101000101
3212211100112001
4300103211011
511220204414
61131225301
7212430454
oct60234505
925740461
1012663109
117169a88
1242a8231
132814a84
141978b9b
1511a2074
hexc13945

12663109 has 8 divisors (see below), whose sum is σ = 12837888. Its totient is φ = 12489840.

The previous prime is 12663107. The next prime is 12663121. The reversal of 12663109 is 90136621.

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

It is a cyclic number.

It is not a de Polignac number, because 12663109 - 21 = 12663107 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 (12663107) 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, 31699 + ... + 32095.

It is an arithmetic number, because the mean of its divisors is an integer number (1604736).

Almost surely, 212663109 is an apocalyptic number.

It is an amenable number.

12663109 is a deficient number, since it is larger than the sum of its proper divisors (174779).

12663109 is a wasteful number, since it uses less digits than its factorization.

12663109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 12663109 is about 3558.5262398920. The cubic root of 12663109 is about 233.0845291245.

The spelling of 12663109 in words is "twelve million, six hundred sixty-three thousand, one hundred nine".

Divisors: 1 167 191 397 31897 66299 75827 12663109