68247169 has 4 divisors (see below), whose sum is σ = 68264260. Its totient is φ = 68230080.

The previous prime is 68247161. The next prime is 68247181. The reversal of 68247169 is 96174286.

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 33872400 + 34374769 = 5820^2 + 5863^2 .

It is a cyclic number.

It is not a de Polignac number, because 68247169 - 2³ = 68247161 is a prime.

It is a super-2 number, since 2×68247169² = 9315352153029122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68247161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997 + ... + 11725.

It is an arithmetic number, because the mean of its divisors is an integer number (17066065).

Almost surely, 2^68247169 is an apocalyptic number.

It is an amenable number.

68247169 is a deficient number, since it is larger than the sum of its proper divisors (17091).

68247169 is a wasteful number, since it uses less digits than its factorization.

68247169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17090.

The product of its digits is 145152, while the sum is 43.

The square root of 68247169 is about 8261.1844792378. The cubic root of 68247169 is about 408.6594507439.

The spelling of 68247169 in words is "sixty-eight million, two hundred forty-seven thousand, one hundred sixty-nine".