658978979 has 2 divisors, whose sum is σ = 658978980. Its totient is φ = 658978978.

The previous prime is 658978933. The next prime is 658978993. The reversal of 658978979 is 979879856.

658978979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-658978979 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (658978079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329489489 + 329489490.

It is an arithmetic number, because the mean of its divisors is an integer number (329489490).

Almost surely, 2^658978979 is an apocalyptic number.

658978979 is a deficient number, since it is larger than the sum of its proper divisors (1).

658978979 is an equidigital number, since it uses as much as digits as its factorization.

658978979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68584320, while the sum is 68.

The square root of 658978979 is about 25670.5858717716. The cubic root of 658978979 is about 870.2095672540.

The spelling of 658978979 in words is "six hundred fifty-eight million, nine hundred seventy-eight thousand, nine hundred seventy-nine".