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68974199 = 719895827
BaseRepresentation
bin1000001110001…
…11011001110111
311210210020210222
410013013121313
5120124133244
610502204555
71465161650
oct407073167
9153706728
1068974199
1135a30378
121b12375b
131139c948
149236527
1560c6bee
hex41c7677

68974199 has 16 divisors (see below), whose sum is σ = 83923200. Its totient is φ = 55370304.

The previous prime is 68974187. The next prime is 68974201. The reversal of 68974199 is 99147986.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68974199 - 216 = 68908663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68974199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68974109) 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, 8924 + ... + 14750.

It is an arithmetic number, because the mean of its divisors is an integer number (5245200).

Almost surely, 268974199 is an apocalyptic number.

68974199 is a deficient number, since it is larger than the sum of its proper divisors (14949001).

68974199 is a wasteful number, since it uses less digits than its factorization.

68974199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5942.

The product of its digits is 979776, while the sum is 53.

The square root of 68974199 is about 8305.0706800123. The cubic root of 68974199 is about 410.1054636487.

The spelling of 68974199 in words is "sixty-eight million, nine hundred seventy-four thousand, one hundred ninety-nine".

Divisors: 1 7 19 89 133 623 1691 5827 11837 40789 110713 518603 774991 3630221 9853457 68974199