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68800079 is a prime number
BaseRepresentation
bin1000001100111…
…00111001001111
311210110101222002
410012130321033
5120103100304
610454342515
71463535215
oct406347117
9153411862
1068800079
1135921577
121b05aa3b
131133b60a
1491cccb5
15609031e
hex419ce4f

68800079 has 2 divisors, whose sum is σ = 68800080. Its totient is φ = 68800078.

The previous prime is 68800051. The next prime is 68800211. The reversal of 68800079 is 97000886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68800079 - 224 = 52022863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68800049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34400039 + 34400040.

It is an arithmetic number, because the mean of its divisors is an integer number (34400040).

Almost surely, 268800079 is an apocalyptic number.

68800079 is a deficient number, since it is larger than the sum of its proper divisors (1).

68800079 is an equidigital number, since it uses as much as digits as its factorization.

68800079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 68800079 is about 8294.5813034776. The cubic root of 68800079 is about 409.7600797400.

The spelling of 68800079 in words is "sixty-eight million, eight hundred thousand, seventy-nine".