68019705 has 24 divisors (see below), whose sum is σ = 126971208. Its totient is φ = 33486336.

The previous prime is 68019701. The next prime is 68019713. The reversal of 68019705 is 50791086.

It can be written as a sum of positive squares in 4 ways, for example, as 8714304 + 59305401 = 2952^2 + 7701^2 .

It is not a de Polignac number, because 68019705 - 2² = 68019701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68019705.

It is not an unprimeable number, because it can be changed into a prime (68019701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57552 + ... + 58721.

It is an arithmetic number, because the mean of its divisors is an integer number (5290467).

Almost surely, 2^68019705 is an apocalyptic number.

68019705 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68019705 is a deficient number, since it is larger than the sum of its proper divisors (58951503).

68019705 is a wasteful number, since it uses less digits than its factorization.

68019705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116297 (or 116294 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 68019705 is about 8247.4059558142. The cubic root of 68019705 is about 408.2049323712.

The spelling of 68019705 in words is "sixty-eight million, nineteen thousand, seven hundred five".