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69090111 = 335348281
BaseRepresentation
bin1000001111000…
…11101100111111
311211000010211000
410013203230333
5120141340421
610504501343
71466153616
oct407435477
9154003730
1069090111
1135aaa472
121b17a853
131141062c
14926687d
1560eb226
hex41e3b3f

69090111 has 16 divisors (see below), whose sum is σ = 104289120. Its totient is φ = 45190080.

The previous prime is 69090097. The next prime is 69090127. The reversal of 69090111 is 11109096.

It is not a de Polignac number, because 69090111 - 25 = 69090079 is a prime.

It is a super-3 number, since 3×690901113 (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69090191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22710 + ... + 25571.

It is an arithmetic number, because the mean of its divisors is an integer number (6518070).

Almost surely, 269090111 is an apocalyptic number.

69090111 is a deficient number, since it is larger than the sum of its proper divisors (35199009).

69090111 is a wasteful number, since it uses less digits than its factorization.

69090111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48343 (or 48337 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 69090111 is about 8312.0461379855. The cubic root of 69090111 is about 410.3350641934.

The spelling of 69090111 in words is "sixty-nine million, ninety thousand, one hundred eleven".

Divisors: 1 3 9 27 53 159 477 1431 48281 144843 434529 1303587 2558893 7676679 23030037 69090111