67073081 has 2 divisors, whose sum is σ = 67073082. Its totient is φ = 67073080.

The previous prime is 67073063. The next prime is 67073087. The reversal of 67073081 is 18037076.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54760000 + 12313081 = 7400^2 + 3509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67073081 is a prime.

It is a super-2 number, since 2×67073081² = 8997596389665122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67073087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33536540 + 33536541.

It is an arithmetic number, because the mean of its divisors is an integer number (33536541).

Almost surely, 2^67073081 is an apocalyptic number.

It is an amenable number.

67073081 is a deficient number, since it is larger than the sum of its proper divisors (1).

67073081 is an equidigital number, since it uses as much as digits as its factorization.

67073081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 67073081 is about 8189.8156877918. The cubic root of 67073081 is about 406.3024290204.

The spelling of 67073081 in words is "sixty-seven million, seventy-three thousand, eighty-one".