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68375299 = 78178747
BaseRepresentation
bin1000001001101…
…01001100000011
311202122211021111
410010311030003
5120001002144
610441304151
71460115616
oct404651403
9152584244
1068375299
1135661413
121aa95057
1311220175
14911c17d
156009534
hex4135303

68375299 has 4 divisors (see below), whose sum is σ = 68391864. Its totient is φ = 68358736.

The previous prime is 68375269. The next prime is 68375341. The reversal of 68375299 is 99257386.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99257386 = 249628693.

It is a cyclic number.

It is not a de Polignac number, because 68375299 - 25 = 68375267 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68375239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3444 + ... + 12190.

It is an arithmetic number, because the mean of its divisors is an integer number (17097966).

Almost surely, 268375299 is an apocalyptic number.

68375299 is a deficient number, since it is larger than the sum of its proper divisors (16565).

68375299 is an equidigital number, since it uses as much as digits as its factorization.

68375299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16564.

The product of its digits is 816480, while the sum is 49.

The square root of 68375299 is about 8268.9357840051. The cubic root of 68375299 is about 408.9150354651.

The spelling of 68375299 in words is "sixty-eight million, three hundred seventy-five thousand, two hundred ninety-nine".

Divisors: 1 7817 8747 68375299