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11666669 = 74735461
BaseRepresentation
bin101100100000…
…010011101101
3210221201122212
4230200103231
510441313134
61054020205
7201110420
oct54402355
923851585
1011666669
116649383
123aa7665
132556371
1417999b7
151056bce
hexb204ed

11666669 has 8 divisors (see below), whose sum is σ = 13617408. Its totient is φ = 9786960.

The previous prime is 11666663. The next prime is 11666689. The reversal of 11666669 is 96666611.

It is a happy number.

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 11666669 - 24 = 11666653 is a prime.

It is a super-2 number, since 2×116666692 = 272222331111122, which contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666663) 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, 17402 + ... + 18059.

It is an arithmetic number, because the mean of its divisors is an integer number (1702176).

Almost surely, 211666669 is an apocalyptic number.

It is an amenable number.

11666669 is a deficient number, since it is larger than the sum of its proper divisors (1950739).

11666669 is an equidigital number, since it uses as much as digits as its factorization.

11666669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35515.

The product of its digits is 69984, while the sum is 41.

The square root of 11666669 is about 3415.6505968849. The cubic root of 11666669 is about 226.8030856520.

The spelling of 11666669 in words is "eleven million, six hundred sixty-six thousand, six hundred sixty-nine".

Divisors: 1 7 47 329 35461 248227 1666667 11666669