67004881 has 2 divisors, whose sum is σ = 67004882. Its totient is φ = 67004880.

The previous prime is 67004863. The next prime is 67004929. The reversal of 67004881 is 18840076.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66569281 + 435600 = 8159^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 67004881 - 2⁷ = 67004753 is a prime.

It is a super-2 number, since 2×67004881² = 8979308155648322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67004851) 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 as a sum of consecutive naturals, namely, 33502440 + 33502441.

It is an arithmetic number, because the mean of its divisors is an integer number (33502441).

Almost surely, 2^67004881 is an apocalyptic number.

It is an amenable number.

67004881 is a deficient number, since it is larger than the sum of its proper divisors (1).

67004881 is an equidigital number, since it uses as much as digits as its factorization.

67004881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 67004881 is about 8185.6509209714. The cubic root of 67004881 is about 406.1646726987.

The spelling of 67004881 in words is "sixty-seven million, four thousand, eight hundred eighty-one".