67055881 has 2 divisors, whose sum is σ = 67055882. Its totient is φ = 67055880.

The previous prime is 67055851. The next prime is 67055899. The reversal of 67055881 is 18855076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65934400 + 1121481 = 8120^2 + 1059^2 .

It is a cyclic number.

It is not a de Polignac number, because 67055881 - 2¹⁵ = 67023113 is a prime.

It is a super-2 number, since 2×67055881² = 8992982353372322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67055851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33527940 + 33527941.

It is an arithmetic number, because the mean of its divisors is an integer number (33527941).

Almost surely, 2^67055881 is an apocalyptic number.

It is an amenable number.

67055881 is a deficient number, since it is larger than the sum of its proper divisors (1).

67055881 is an equidigital number, since it uses as much as digits as its factorization.

67055881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 67055881 is about 8188.7655357813. The cubic root of 67055881 is about 406.2676957657.

The spelling of 67055881 in words is "sixty-seven million, fifty-five thousand, eight hundred eighty-one".