67038641 has 2 divisors, whose sum is σ = 67038642. Its totient is φ = 67038640.

The previous prime is 67038637. The next prime is 67038739. The reversal of 67038641 is 14683076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56175025 + 10863616 = 7495^2 + 3296^2 .

It is a cyclic number.

It is not a de Polignac number, because 67038641 - 2² = 67038637 is a prime.

It is not a weakly prime, because it can be changed into another prime (67038341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33519320 + 33519321.

It is an arithmetic number, because the mean of its divisors is an integer number (33519321).

Almost surely, 2^67038641 is an apocalyptic number.

It is an amenable number.

67038641 is a deficient number, since it is larger than the sum of its proper divisors (1).

67038641 is an equidigital number, since it uses as much as digits as its factorization.

67038641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 67038641 is about 8187.7128063947. The cubic root of 67038641 is about 406.2328757752.

The spelling of 67038641 in words is "sixty-seven million, thirty-eight thousand, six hundred forty-one".