650399137 has 2 divisors, whose sum is σ = 650399138. Its totient is φ = 650399136.

The previous prime is 650399119. The next prime is 650399161. The reversal of 650399137 is 731993056.

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., 509359761 + 141039376 = 22569^2 + 11876^2 .

It is a cyclic number.

It is not a de Polignac number, because 650399137 - 2¹⁵ = 650366369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 650399093 and 650399102.

It is not a weakly prime, because it can be changed into another prime (650399117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325199568 + 325199569.

It is an arithmetic number, because the mean of its divisors is an integer number (325199569).

Almost surely, 2^650399137 is an apocalyptic number.

It is an amenable number.

650399137 is a deficient number, since it is larger than the sum of its proper divisors (1).

650399137 is an equidigital number, since it uses as much as digits as its factorization.

650399137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 43.

The square root of 650399137 is about 25502.9240872493. The cubic root of 650399137 is about 866.4163757677.

The spelling of 650399137 in words is "six hundred fifty million, three hundred ninety-nine thousand, one hundred thirty-seven".