68019029 has 8 divisors (see below), whose sum is σ = 73351992. Its totient is φ = 62700480.

The previous prime is 68018983. The next prime is 68019059. The reversal of 68019029 is 92091086.

It can be written as a sum of positive squares in 4 ways, for example, as 4418404 + 63600625 = 2102^2 + 7975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68019029 is a prime.

It is a super-2 number, since 2×68019029² = 9253176612205682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68019029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68019059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7487 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (9168999).

Almost surely, 2^68019029 is an apocalyptic number.

It is an amenable number.

68019029 is a deficient number, since it is larger than the sum of its proper divisors (5332963).

68019029 is a wasteful number, since it uses less digits than its factorization.

68019029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 68019029 is about 8247.3649731293. The cubic root of 68019029 is about 408.2035800795.

The spelling of 68019029 in words is "sixty-eight million, nineteen thousand, twenty-nine".