67980863 has 2 divisors, whose sum is σ = 67980864. Its totient is φ = 67980862.

The previous prime is 67980859. The next prime is 67980931. The reversal of 67980863 is 36808976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67980863 - 2² = 67980859 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 (67980823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33990431 + 33990432.

It is an arithmetic number, because the mean of its divisors is an integer number (33990432).

Almost surely, 2^67980863 is an apocalyptic number.

67980863 is a deficient number, since it is larger than the sum of its proper divisors (1).

67980863 is an equidigital number, since it uses as much as digits as its factorization.

67980863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 67980863 is about 8245.0508185214. The cubic root of 67980863 is about 408.1272170730.

The spelling of 67980863 in words is "sixty-seven million, nine hundred eighty thousand, eight hundred sixty-three".