67006681 has 16 divisors (see below), whose sum is σ = 78537600. Its totient is φ = 55980288.

The previous prime is 67006679. The next prime is 67006691. The reversal of 67006681 is 18660076.

It is not a de Polignac number, because 67006681 - 2¹ = 67006679 is a prime.

It is a super-2 number, since 2×67006681² = 8979790597271522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67006601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65905 + ... + 66913.

It is an arithmetic number, because the mean of its divisors is an integer number (4908600).

Almost surely, 2^67006681 is an apocalyptic number.

It is an amenable number.

67006681 is a deficient number, since it is larger than the sum of its proper divisors (11530919).

67006681 is a wasteful number, since it uses less digits than its factorization.

67006681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 67006681 is about 8185.7608687281. The cubic root of 67006681 is about 406.1683096968.

The spelling of 67006681 in words is "sixty-seven million, six thousand, six hundred eighty-one".