67488881 has 2 divisors, whose sum is σ = 67488882. Its totient is φ = 67488880.

The previous prime is 67488871. The next prime is 67488901. The reversal of 67488881 is 18888476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59598400 + 7890481 = 7720^2 + 2809^2 .

It is a cyclic number.

It is not a de Polignac number, because 67488881 - 2¹⁰ = 67487857 is a prime.

It is a super-2 number, since 2×67488881² = 9109498117264322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (67488871) 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 as a sum of consecutive naturals, namely, 33744440 + 33744441.

It is an arithmetic number, because the mean of its divisors is an integer number (33744441).

Almost surely, 2^67488881 is an apocalyptic number.

It is an amenable number.

67488881 is a deficient number, since it is larger than the sum of its proper divisors (1).

67488881 is an equidigital number, since it uses as much as digits as its factorization.

67488881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 688128, while the sum is 50.

The square root of 67488881 is about 8215.1616539177. The cubic root of 67488881 is about 407.1402845138.

The spelling of 67488881 in words is "sixty-seven million, four hundred eighty-eight thousand, eight hundred eighty-one".