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999282661 = 131723918919
BaseRepresentation
bin111011100011111…
…101011111100101
32120122022211002221
4323203331133211
54021304021121
6243054032341
733522522346
oct7343753745
92518284087
10999282661
11473083943
1223a7a86b1
1312c048820
1496a020cd
155caddb41
hex3b8fd7e5

999282661 has 16 divisors (see below), whose sum is σ = 1144281600. Its totient is φ = 864476928.

The previous prime is 999282649. The next prime is 999282671. The reversal of 999282661 is 166282999.

It is not a de Polignac number, because 999282661 - 211 = 999280613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999282599 and 999282608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999282611) 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, 43360 + ... + 62278.

It is an arithmetic number, because the mean of its divisors is an integer number (71517600).

Almost surely, 2999282661 is an apocalyptic number.

It is an amenable number.

999282661 is a deficient number, since it is larger than the sum of its proper divisors (144998939).

999282661 is a wasteful number, since it uses less digits than its factorization.

999282661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19188.

The product of its digits is 839808, while the sum is 52.

The square root of 999282661 is about 31611.4324414443. The cubic root of 999282661 is about 999.7608298022.

The spelling of 999282661 in words is "nine hundred ninety-nine million, two hundred eighty-two thousand, six hundred sixty-one".

Divisors: 1 13 17 221 239 3107 4063 18919 52819 245947 321623 4181099 4521641 58781333 76867897 999282661