67265881 has 2 divisors, whose sum is σ = 67265882. Its totient is φ = 67265880.

The previous prime is 67265843. The next prime is 67265917. The reversal of 67265881 is 18856276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49491225 + 17774656 = 7035^2 + 4216^2 .

It is a cyclic number.

It is not a de Polignac number, because 67265881 - 2²⁵ = 33711449 is a prime.

It is a super-2 number, since 2×67265881² = 9049397493412322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67265801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33632940 + 33632941.

It is an arithmetic number, because the mean of its divisors is an integer number (33632941).

Almost surely, 2^67265881 is an apocalyptic number.

It is an amenable number.

67265881 is a deficient number, since it is larger than the sum of its proper divisors (1).

67265881 is an equidigital number, since it uses as much as digits as its factorization.

67265881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 67265881 is about 8201.5779579298. The cubic root of 67265881 is about 406.6913588728.

The spelling of 67265881 in words is "sixty-seven million, two hundred sixty-five thousand, eight hundred eighty-one".