67680081 has 12 divisors (see below), whose sum is σ = 111725952. Its totient is φ = 38674296.

The previous prime is 67680061. The next prime is 67680091. The reversal of 67680081 is 18008676.

It is not a de Polignac number, because 67680081 - 2¹³ = 67671889 is a prime.

It is a super-2 number, since 2×67680081² = 9161186728333122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67680001) 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 11 ways as a sum of consecutive naturals, for example, 537081 + ... + 537206.

It is an arithmetic number, because the mean of its divisors is an integer number (9310496).

Almost surely, 2^67680081 is an apocalyptic number.

It is an amenable number.

67680081 is a deficient number, since it is larger than the sum of its proper divisors (44045871).

67680081 is a wasteful number, since it uses less digits than its factorization.

67680081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074300 (or 1074297 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 67680081 is about 8226.7904434232. The cubic root of 67680081 is about 407.5244061812.

The spelling of 67680081 in words is "sixty-seven million, six hundred eighty thousand, eighty-one".