67081603 has 2 divisors, whose sum is σ = 67081604. Its totient is φ = 67081602.

The previous prime is 67081601. The next prime is 67081621. The reversal of 67081603 is 30618076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67081603 - 2¹ = 67081601 is a prime.

It is a super-2 number, since 2×67081603² = 8999882922099218, which contains 22 as substring.

Together with 67081601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (67081601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33540801 + 33540802.

It is an arithmetic number, because the mean of its divisors is an integer number (33540802).

Almost surely, 2^67081603 is an apocalyptic number.

67081603 is a deficient number, since it is larger than the sum of its proper divisors (1).

67081603 is an equidigital number, since it uses as much as digits as its factorization.

67081603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 67081603 is about 8190.3359515956. The cubic root of 67081603 is about 406.3196359367.

Adding to 67081603 its reverse (30618076), we get a palindrome (97699679).

The spelling of 67081603 in words is "sixty-seven million, eighty-one thousand, six hundred three".