650666699 has 2 divisors, whose sum is σ = 650666700. Its totient is φ = 650666698.

The previous prime is 650666693. The next prime is 650666747. The reversal of 650666699 is 996666056.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 650666699 - 2¹² = 650662603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 650666699.

It is not a weakly prime, because it can be changed into another prime (650666693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325333349 + 325333350.

It is an arithmetic number, because the mean of its divisors is an integer number (325333350).

Almost surely, 2^650666699 is an apocalyptic number.

650666699 is a deficient number, since it is larger than the sum of its proper divisors (1).

650666699 is an equidigital number, since it uses as much as digits as its factorization.

650666699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3149280, while the sum is 53.

The square root of 650666699 is about 25508.1692600625. The cubic root of 650666699 is about 866.5351686256.

The spelling of 650666699 in words is "six hundred fifty million, six hundred sixty-six thousand, six hundred ninety-nine".