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689902211 = 17283143401
BaseRepresentation
bin101001000111110…
…001001010000011
31210002011122220202
4221013301022003
52403103332321
6152242555415
723045033465
oct5107611203
91702148822
10689902211
11324482819
12173068b6b
13acc1517b
14678aa135
154087a70b
hex291f1283

689902211 has 8 divisors (see below), whose sum is σ = 733071024. Its totient is φ = 647020800.

The previous prime is 689902201. The next prime is 689902229. The reversal of 689902211 is 112209986.

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 689902211 - 214 = 689885827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689902201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66890 + ... + 76511.

It is an arithmetic number, because the mean of its divisors is an integer number (91633878).

Almost surely, 2689902211 is an apocalyptic number.

689902211 is a deficient number, since it is larger than the sum of its proper divisors (43168813).

689902211 is a wasteful number, since it uses less digits than its factorization.

689902211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143701.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 689902211 is about 26265.9896253692. The cubic root of 689902211 is about 883.6138454388.

The spelling of 689902211 in words is "six hundred eighty-nine million, nine hundred two thousand, two hundred eleven".

Divisors: 1 17 283 4811 143401 2437817 40582483 689902211