650198947 has 2 divisors, whose sum is σ = 650198948. Its totient is φ = 650198946.

The previous prime is 650198873. The next prime is 650198959. The reversal of 650198947 is 749891056.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650198947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 650198947.

It is not a weakly prime, because it can be changed into another prime (650198977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325099473 + 325099474.

It is an arithmetic number, because the mean of its divisors is an integer number (325099474).

Almost surely, 2^650198947 is an apocalyptic number.

650198947 is a deficient number, since it is larger than the sum of its proper divisors (1).

650198947 is an equidigital number, since it uses as much as digits as its factorization.

650198947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 650198947 is about 25498.9989411349. The cubic root of 650198947 is about 866.3274735932.

The spelling of 650198947 in words is "six hundred fifty million, one hundred ninety-eight thousand, nine hundred forty-seven".