999650513 has 2 divisors, whose sum is σ = 999650514. Its totient is φ = 999650512.

The previous prime is 999650467. The next prime is 999650527. The reversal of 999650513 is 315056999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 893292544 + 106357969 = 29888^2 + 10313^2 .

It is a cyclic number.

It is not a de Polignac number, because 999650513 - 2¹⁶ = 999584977 is a prime.

It is a super-2 number, since 2×999650513² = 1998602296282326338, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (999650593) 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, 499825256 + 499825257.

It is an arithmetic number, because the mean of its divisors is an integer number (499825257).

Almost surely, 2^999650513 is an apocalyptic number.

It is an amenable number.

999650513 is a deficient number, since it is larger than the sum of its proper divisors (1).

999650513 is an equidigital number, since it uses as much as digits as its factorization.

999650513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 328050, while the sum is 47.

The square root of 999650513 is about 31617.2502441310. The cubic root of 999650513 is about 999.8834907595.

The spelling of 999650513 in words is "nine hundred ninety-nine million, six hundred fifty thousand, five hundred thirteen".