67978327 has 2 divisors, whose sum is σ = 67978328. Its totient is φ = 67978326.

The previous prime is 67978321. The next prime is 67978343. The reversal of 67978327 is 72387976.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67978327 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67978321) 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, 33989163 + 33989164.

It is an arithmetic number, because the mean of its divisors is an integer number (33989164).

Almost surely, 2^67978327 is an apocalyptic number.

67978327 is a deficient number, since it is larger than the sum of its proper divisors (1).

67978327 is an equidigital number, since it uses as much as digits as its factorization.

67978327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 49.

The square root of 67978327 is about 8244.8970278591. The cubic root of 67978327 is about 408.1221420001.

The spelling of 67978327 in words is "sixty-seven million, nine hundred seventy-eight thousand, three hundred twenty-seven".