68273717 has 4 divisors (see below), whose sum is σ = 72289836. Its totient is φ = 64257600.

The previous prime is 68273713. The next prime is 68273767. The reversal of 68273717 is 71737286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62315236 + 5958481 = 7894^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 68273717 - 2² = 68273713 is a prime.

It is a super-2 number, since 2×68273717² = 9322600865992178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68273713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2008034 + ... + 2008067.

It is an arithmetic number, because the mean of its divisors is an integer number (18072459).

Almost surely, 2^68273717 is an apocalyptic number.

It is an amenable number.

68273717 is a deficient number, since it is larger than the sum of its proper divisors (4016119).

68273717 is a wasteful number, since it uses less digits than its factorization.

68273717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016118.

The product of its digits is 98784, while the sum is 41.

The square root of 68273717 is about 8262.7911143874. The cubic root of 68273717 is about 408.7124330863.

The spelling of 68273717 in words is "sixty-eight million, two hundred seventy-three thousand, seven hundred seventeen".