67945679 has 2 divisors, whose sum is σ = 67945680. Its totient is φ = 67945678.

The previous prime is 67945673. The next prime is 67945693. The reversal of 67945679 is 97654976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67945679 - 2⁴ = 67945663 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67945679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67945673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33972839 + 33972840.

It is an arithmetic number, because the mean of its divisors is an integer number (33972840).

Almost surely, 2^67945679 is an apocalyptic number.

67945679 is a deficient number, since it is larger than the sum of its proper divisors (1).

67945679 is an equidigital number, since it uses as much as digits as its factorization.

67945679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 53.

The square root of 67945679 is about 8242.9168987683. The cubic root of 67945679 is about 408.0567951661.

The spelling of 67945679 in words is "sixty-seven million, nine hundred forty-five thousand, six hundred seventy-nine".