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68152219 is a prime number
BaseRepresentation
bin1000000111111…
…10101110011011
311202020111021021
410003332232123
5114421332334
610432423311
71455166342
oct403765633
9152214237
1068152219
1135519853
121a9a7b37
1311172775
1490a0b59
155eb33b4
hex40feb9b

68152219 has 2 divisors, whose sum is σ = 68152220. Its totient is φ = 68152218.

The previous prime is 68152177. The next prime is 68152277. The reversal of 68152219 is 91225186.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68152219 is a prime.

It is a super-2 number, since 2×681522192 = 9289449909247922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68552219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34076109 + 34076110.

It is an arithmetic number, because the mean of its divisors is an integer number (34076110).

Almost surely, 268152219 is an apocalyptic number.

68152219 is a deficient number, since it is larger than the sum of its proper divisors (1).

68152219 is an equidigital number, since it uses as much as digits as its factorization.

68152219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 34.

The square root of 68152219 is about 8255.4357244182. The cubic root of 68152219 is about 408.4698447178.

It can be divided in two parts, 681 and 52219, that added together give a square (52900 = 2302).

The spelling of 68152219 in words is "sixty-eight million, one hundred fifty-two thousand, two hundred nineteen".