67872681 has 8 divisors (see below), whose sum is σ = 100552160. Its totient is φ = 45248436.

The previous prime is 67872661. The next prime is 67872691. The reversal of 67872681 is 18627876.

It is not a de Polignac number, because 67872681 - 2⁹ = 67872169 is a prime.

It is a super-2 number, since 2×67872681² = 9213401652255522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67872601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256875 + ... + 1256928.

It is an arithmetic number, because the mean of its divisors is an integer number (12569020).

Almost surely, 2^67872681 is an apocalyptic number.

It is an amenable number.

67872681 is a deficient number, since it is larger than the sum of its proper divisors (32679479).

67872681 is a wasteful number, since it uses less digits than its factorization.

67872681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513812 (or 2513806 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 67872681 is about 8238.4877859957. The cubic root of 67872681 is about 407.9106097418.

The spelling of 67872681 in words is "sixty-seven million, eight hundred seventy-two thousand, six hundred eighty-one".