650537399 has 2 divisors, whose sum is σ = 650537400. Its totient is φ = 650537398.

The previous prime is 650537357. The next prime is 650537413. The reversal of 650537399 is 993735056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 650537399 - 2¹⁶ = 650471863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650537339) 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, 325268699 + 325268700.

It is an arithmetic number, because the mean of its divisors is an integer number (325268700).

Almost surely, 2^650537399 is an apocalyptic number.

650537399 is a deficient number, since it is larger than the sum of its proper divisors (1).

650537399 is an equidigital number, since it uses as much as digits as its factorization.

650537399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 765450, while the sum is 47.

The square root of 650537399 is about 25505.6346519745. The cubic root of 650537399 is about 866.4777657494.

The spelling of 650537399 in words is "six hundred fifty million, five hundred thirty-seven thousand, three hundred ninety-nine".