67112779 has 2 divisors, whose sum is σ = 67112780. Its totient is φ = 67112778.

The previous prime is 67112767. The next prime is 67112789. The reversal of 67112779 is 97721176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67112779 - 2⁹ = 67112267 is a prime.

It is not a weakly prime, because it can be changed into another prime (67112789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33556389 + 33556390.

It is an arithmetic number, because the mean of its divisors is an integer number (33556390).

Almost surely, 2^67112779 is an apocalyptic number.

67112779 is a deficient number, since it is larger than the sum of its proper divisors (1).

67112779 is an equidigital number, since it uses as much as digits as its factorization.

67112779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37044, while the sum is 40.

The square root of 67112779 is about 8192.2389491518. The cubic root of 67112779 is about 406.3825715183.

The spelling of 67112779 in words is "sixty-seven million, one hundred twelve thousand, seven hundred seventy-nine".