609968651 has 2 divisors, whose sum is σ = 609968652. Its totient is φ = 609968650.

The previous prime is 609968641. The next prime is 609968663. The reversal of 609968651 is 156869906.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 609968651 - 2¹⁰ = 609967627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 609968651.

It is not a weakly prime, because it can be changed into another prime (609968641) 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, 304984325 + 304984326.

It is an arithmetic number, because the mean of its divisors is an integer number (304984326).

Almost surely, 2^609968651 is an apocalyptic number.

609968651 is a deficient number, since it is larger than the sum of its proper divisors (1).

609968651 is an equidigital number, since it uses as much as digits as its factorization.

609968651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 609968651 is about 24697.5434203485. The cubic root of 609968651 is about 848.0780802638.

The spelling of 609968651 in words is "six hundred nine million, nine hundred sixty-eight thousand, six hundred fifty-one".