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68146153 = 312817823
BaseRepresentation
bin1000000111111…
…01001111101001
311202020011221121
410003331033221
5114421134103
610432335241
71455142555
oct403751751
9152204847
1068146153
1135515239
121a9a4521
131116ca8a
14909c865
155eb16bd
hex40fd3e9

68146153 has 8 divisors (see below), whose sum is σ = 70603776. Its totient is φ = 65704800.

The previous prime is 68146151. The next prime is 68146163. The reversal of 68146153 is 35164186.

It is a happy number.

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 68146153 - 21 = 68146151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68146151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4800 + ... + 12622.

It is an arithmetic number, because the mean of its divisors is an integer number (8825472).

Almost surely, 268146153 is an apocalyptic number.

It is an amenable number.

68146153 is a deficient number, since it is larger than the sum of its proper divisors (2457623).

68146153 is a wasteful number, since it uses less digits than its factorization.

68146153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8135.

The product of its digits is 17280, while the sum is 34.

The square root of 68146153 is about 8255.0683219462. The cubic root of 68146153 is about 408.4577255155.

The spelling of 68146153 in words is "sixty-eight million, one hundred forty-six thousand, one hundred fifty-three".

Divisors: 1 31 281 7823 8711 242513 2198263 68146153