630861611 has 2 divisors, whose sum is σ = 630861612. Its totient is φ = 630861610.

The previous prime is 630861607. The next prime is 630861631. The reversal of 630861611 is 116168036.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 630861611 - 2² = 630861607 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (630861631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315430805 + 315430806.

It is an arithmetic number, because the mean of its divisors is an integer number (315430806).

Almost surely, 2^630861611 is an apocalyptic number.

630861611 is a deficient number, since it is larger than the sum of its proper divisors (1).

630861611 is an equidigital number, since it uses as much as digits as its factorization.

630861611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 630861611 is about 25116.9586335607. The cubic root of 630861611 is about 857.6525177574.

The spelling of 630861611 in words is "six hundred thirty million, eight hundred sixty-one thousand, six hundred eleven".