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111664 = 247997
BaseRepresentation
bin11011010000110000
312200011201
4123100300
512033124
62220544
7643360
oct332060
9180151
10111664
1176993
1254754
133ba97
142c9a0
1523144
hex1b430

111664 has 20 divisors (see below), whose sum is σ = 247504. Its totient is φ = 47808.

The previous prime is 111659. The next prime is 111667. The reversal of 111664 is 466111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387 + ... + 610.

2111664 is an apocalyptic number.

111664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

111664 is an abundant number, since it is smaller than the sum of its proper divisors (135840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111664 is an equidigital number, since it uses as much as digits as its factorization.

111664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 1006 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 111664 is about 334.1616375349. The cubic root of 111664 is about 48.1545941549.

Adding to 111664 its reverse (466111), we get a palindrome (577775).

The spelling of 111664 in words is "one hundred eleven thousand, six hundred sixty-four".

Divisors: 1 2 4 7 8 14 16 28 56 112 997 1994 3988 6979 7976 13958 15952 27916 55832 111664