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68110651 = 79730093
BaseRepresentation
bin1000000111101…
…00100100111011
311202011101020201
410003310210323
5114414020101
610431503031
71454634220
oct403644473
9152141221
1068110651
11354a05a4
121a987a77
131115987b
14908d947
155ea5e01
hex40f493b

68110651 has 4 divisors (see below), whose sum is σ = 77840752. Its totient is φ = 58380552.

The previous prime is 68110639. The next prime is 68110703. The reversal of 68110651 is 15601186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68110651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68110351) 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 3 ways as a sum of consecutive naturals, for example, 4865040 + ... + 4865053.

It is an arithmetic number, because the mean of its divisors is an integer number (19460188).

Almost surely, 268110651 is an apocalyptic number.

68110651 is a deficient number, since it is larger than the sum of its proper divisors (9730101).

68110651 is an equidigital number, since it uses as much as digits as its factorization.

68110651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9730100.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 68110651 is about 8252.9177264771. The cubic root of 68110651 is about 408.3867819896.

The spelling of 68110651 in words is "sixty-eight million, one hundred ten thousand, six hundred fifty-one".

Divisors: 1 7 9730093 68110651