650399699 has 2 divisors, whose sum is σ = 650399700. Its totient is φ = 650399698.

The previous prime is 650399669. The next prime is 650399731. The reversal of 650399699 is 996993056.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650399699 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (650399669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325199849 + 325199850.

It is an arithmetic number, because the mean of its divisors is an integer number (325199850).

Almost surely, 2^650399699 is an apocalyptic number.

650399699 is a deficient number, since it is larger than the sum of its proper divisors (1).

650399699 is an equidigital number, since it uses as much as digits as its factorization.

650399699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3542940, while the sum is 56.

The square root of 650399699 is about 25502.9351055913. The cubic root of 650399699 is about 866.4166253200.

The spelling of 650399699 in words is "six hundred fifty million, three hundred ninety-nine thousand, six hundred ninety-nine".