650064979 has 2 divisors, whose sum is σ = 650064980. Its totient is φ = 650064978.

The previous prime is 650064977. The next prime is 650065001. The reversal of 650064979 is 979460056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 650064979 - 2¹ = 650064977 is a prime.

Together with 650064977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (650064971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325032489 + 325032490.

It is an arithmetic number, because the mean of its divisors is an integer number (325032490).

Almost surely, 2^650064979 is an apocalyptic number.

650064979 is a deficient number, since it is larger than the sum of its proper divisors (1).

650064979 is an equidigital number, since it uses as much as digits as its factorization.

650064979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 650064979 is about 25496.3718791517. The cubic root of 650064979 is about 866.2679696872.

The spelling of 650064979 in words is "six hundred fifty million, sixty-four thousand, nine hundred seventy-nine".