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68892000069 = 3673499912
BaseRepresentation
bin100000000101001001…
…0000111111101000101
320120211012110012201010
41000022102013331011
52112042323000234
651352030352433
74656131224104
oct1001222077505
9216735405633
1068892000069
1127242813352
121142795b719
13665ba255a9
1434977d403b
151bd31e96e9
hex100a487f45

68892000069 has 24 divisors (see below), whose sum is σ = 93588549600. Its totient is φ = 45067350240.

The previous prime is 68892000053. The next prime is 68892000071. The reversal of 68892000069 is 96000029886.

It is not a de Polignac number, because 68892000069 - 24 = 68892000053 is a prime.

It is a super-2 number, since 2×688920000692 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68891999991 and 68892000027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68892000029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69517164 + ... + 69518154.

It is an arithmetic number, because the mean of its divisors is an integer number (3899522900).

Almost surely, 268892000069 is an apocalyptic number.

68892000069 is the 140298-th nonagonal number.

It is an amenable number.

68892000069 is a deficient number, since it is larger than the sum of its proper divisors (24696549531).

68892000069 is an frugal number, since it uses more digits than its factorization.

68892000069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 68892000069 in words is "sixty-eight billion, eight hundred ninety-two million, sixty-nine", and thus it is an aban number.

Divisors: 1 3 67 201 349 991 1047 2973 23383 66397 70149 199191 345859 982081 1037577 2946243 23172553 65799427 69517659 197398281 342746269 1028238807 22964000023 68892000069