68213687349 has 8 divisors (see below), whose sum is σ = 95738508640. Its totient is φ = 43082328816.

The previous prime is 68213687291. The next prime is 68213687357. The reversal of 68213687349 is 94378631286.

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

It is not a de Polignac number, because 68213687349 - 2¹⁹ = 68213163061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 1196731357 = 68213687349 / (6 + 8 + 2 + 1 + 3 + 6 + 8 + 7 + 3 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68213687359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598365622 + ... + 598365735.

It is an arithmetic number, because the mean of its divisors is an integer number (11967313580).

Almost surely, 2^68213687349 is an apocalyptic number.

It is an amenable number.

68213687349 is a deficient number, since it is larger than the sum of its proper divisors (27524821291).

68213687349 is a wasteful number, since it uses less digits than its factorization.

68213687349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196731379.

The product of its digits is 10450944, while the sum is 57.

The spelling of 68213687349 in words is "sixty-eight billion, two hundred thirteen million, six hundred eighty-seven thousand, three hundred forty-nine".