6630997361 has 2 divisors, whose sum is σ = 6630997362. Its totient is φ = 6630997360.

The previous prime is 6630997343. The next prime is 6630997369. The reversal of 6630997361 is 1637990366.

It is a happy number.

6630997361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4424910400 + 2206086961 = 66520^2 + 46969^2 .

It is a cyclic number.

It is not a de Polignac number, because 6630997361 - 2³⁰ = 5557255537 is a prime.

It is not a weakly prime, because it can be changed into another prime (6630997369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315498680 + 3315498681.

It is an arithmetic number, because the mean of its divisors is an integer number (3315498681).

Almost surely, 2^6630997361 is an apocalyptic number.

It is an amenable number.

6630997361 is a deficient number, since it is larger than the sum of its proper divisors (1).

6630997361 is an equidigital number, since it uses as much as digits as its factorization.

6630997361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 50.

The square root of 6630997361 is about 81430.9361422304. The cubic root of 6630997361 is about 1878.7094433306.

The spelling of 6630997361 in words is "six billion, six hundred thirty million, nine hundred ninety-seven thousand, three hundred sixty-one".