7668200009 has 2 divisors, whose sum is σ = 7668200010. Its totient is φ = 7668200008.

The previous prime is 7668200003. The next prime is 7668200051. The reversal of 7668200009 is 9000028667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3889393225 + 3778806784 = 62365^2 + 61472^2 .

It is a cyclic number.

It is not a de Polignac number, because 7668200009 - 2³² = 3373232713 is a prime.

It is not a weakly prime, because it can be changed into another prime (7668200003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3834100004 + 3834100005.

It is an arithmetic number, because the mean of its divisors is an integer number (3834100005).

Almost surely, 2^7668200009 is an apocalyptic number.

It is an amenable number.

7668200009 is a deficient number, since it is larger than the sum of its proper divisors (1).

7668200009 is an equidigital number, since it uses as much as digits as its factorization.

7668200009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 7668200009 is about 87568.2591410838. The cubic root of 7668200009 is about 1971.9586803912.

The spelling of 7668200009 in words is "seven billion, six hundred sixty-eight million, two hundred thousand, nine".