650198873 has 2 divisors, whose sum is σ = 650198874. Its totient is φ = 650198872.

The previous prime is 650198863. The next prime is 650198947. The reversal of 650198873 is 378891056.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325910809 + 324288064 = 18053^2 + 18008^2 .

It is a cyclic number.

It is not a de Polignac number, because 650198873 - 2¹² = 650194777 is a prime.

It is not a weakly prime, because it can be changed into another prime (650198863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325099436 + 325099437.

It is an arithmetic number, because the mean of its divisors is an integer number (325099437).

Almost surely, 2^650198873 is an apocalyptic number.

It is an amenable number.

650198873 is a deficient number, since it is larger than the sum of its proper divisors (1).

650198873 is an equidigital number, since it uses as much as digits as its factorization.

650198873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 650198873 is about 25498.9974900975. The cubic root of 650198873 is about 866.3274407272.

The spelling of 650198873 in words is "six hundred fifty million, one hundred ninety-eight thousand, eight hundred seventy-three".