67781083 has 2 divisors, whose sum is σ = 67781084. Its totient is φ = 67781082.

The previous prime is 67781059. The next prime is 67781093. The reversal of 67781083 is 38018776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67781083 - 2⁹ = 67780571 is a prime.

It is not a weakly prime, because it can be changed into another prime (67781053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33890541 + 33890542.

It is an arithmetic number, because the mean of its divisors is an integer number (33890542).

Almost surely, 2^67781083 is an apocalyptic number.

67781083 is a deficient number, since it is larger than the sum of its proper divisors (1).

67781083 is an equidigital number, since it uses as much as digits as its factorization.

67781083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 67781083 is about 8232.9267578426. The cubic root of 67781083 is about 407.7270276964.

The spelling of 67781083 in words is "sixty-seven million, seven hundred eighty-one thousand, eighty-three".