68681273 has 8 divisors (see below), whose sum is σ = 70465416. Its totient is φ = 66902400.

The previous prime is 68681233. The next prime is 68681279. The reversal of 68681273 is 37218686.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2795584 + 65885689 = 1672^2 + 8117^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 68681273 - 2⁶ = 68681209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

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 68681273.

It is not an unprimeable number, because it can be changed into a prime (68681279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49043 + ... + 50423.

It is an arithmetic number, because the mean of its divisors is an integer number (8808177).

Almost surely, 2^68681273 is an apocalyptic number.

It is an amenable number.

68681273 is a deficient number, since it is larger than the sum of its proper divisors (1784143).

68681273 is a wasteful number, since it uses less digits than its factorization.

68681273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635.

The product of its digits is 96768, while the sum is 41.

The square root of 68681273 is about 8287.4165455828. The cubic root of 68681273 is about 409.5240819259.

The spelling of 68681273 in words is "sixty-eight million, six hundred eighty-one thousand, two hundred seventy-three".