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14660987 = 111778401
BaseRepresentation
bin110111111011…
…010101111011
31000120212002112
4313323111323
512223122422
61242122535
7235421255
oct67732573
930525075
1014660987
118304020
124ab044b
133064253
141d38cd5
151448ee2
hexdfb57b

14660987 has 8 divisors (see below), whose sum is σ = 16934832. Its totient is φ = 12544000.

The previous prime is 14660981. The next prime is 14660999. The reversal of 14660987 is 78906641.

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 14660987 - 28 = 14660731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14660981) 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, 39014 + ... + 39387.

It is an arithmetic number, because the mean of its divisors is an integer number (2116854).

Almost surely, 214660987 is an apocalyptic number.

14660987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

14660987 is a deficient number, since it is larger than the sum of its proper divisors (2273845).

14660987 is a wasteful number, since it uses less digits than its factorization.

14660987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78429.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 14660987 is about 3828.9668319274. The cubic root of 14660987 is about 244.7490808824.

The spelling of 14660987 in words is "fourteen million, six hundred sixty thousand, nine hundred eighty-seven".

Divisors: 1 11 17 187 78401 862411 1332817 14660987