68019 has 16 divisors (see below), whose sum is σ = 107520. Its totient is φ = 37440.
The previous prime is 67993. The next prime is 68023. The reversal of 68019 is 91086.
It is not a de Polignac number, because 68019 - 25 = 67987 is a prime.
It is a super-2 number, since 2×680192 = 9253168722, which contains 22 as substring.
It is an Ulam number.
It is a self number, because there is not a number n which added to its sum of digits gives 68019.
It is not an unprimeable number, because it can be changed into a prime (68059) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822 + ... + 900.
It is an arithmetic number, because the mean of its divisors is an integer number (6720).
268019 is an apocalyptic number.
68019 is a deficient number, since it is larger than the sum of its proper divisors (39501).
68019 is a wasteful number, since it uses less digits than its factorization.
68019 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 130.
The product of its (nonzero) digits is 432, while the sum is 24.
The square root of 68019 is about 260.8045245006. The cubic root of 68019 is about 40.8203522067.
The spelling of 68019 in words is "sixty-eight thousand, nineteen".
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