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68027197 = 79718171
BaseRepresentation
bin1000000111000…
…00001100111101
311202000010202211
410003200030331
5114403332242
610430020421
71454136010
oct403401475
9152003684
1068027197
1135443927
121a947711
131112a8a4
14906b377
155e8b317
hex40e033d

68027197 has 4 divisors (see below), whose sum is σ = 77745376. Its totient is φ = 58309020.

The previous prime is 68027147. The next prime is 68027231. The reversal of 68027197 is 79172086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-68027197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68027117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4859079 + ... + 4859092.

It is an arithmetic number, because the mean of its divisors is an integer number (19436344).

Almost surely, 268027197 is an apocalyptic number.

It is an amenable number.

68027197 is a deficient number, since it is larger than the sum of its proper divisors (9718179).

68027197 is an equidigital number, since it uses as much as digits as its factorization.

68027197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9718178.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 68027197 is about 8247.8601467290. The cubic root of 68027197 is about 408.2199190043.

The spelling of 68027197 in words is "sixty-eight million, twenty-seven thousand, one hundred ninety-seven".

Divisors: 1 7 9718171 68027197