8630641 has 2 divisors, whose sum is σ = 8630642. Its totient is φ = 8630640.

The previous prime is 8630639. The next prime is 8630647. The reversal of 8630641 is 1460368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6864400 + 1766241 = 2620^2 + 1329^2 .

It is a cyclic number.

It is not a de Polignac number, because 8630641 - 2¹ = 8630639 is a prime.

Together with 8630639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8630647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4315320 + 4315321.

It is an arithmetic number, because the mean of its divisors is an integer number (4315321).

Almost surely, 2^8630641 is an apocalyptic number.

It is an amenable number.

8630641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8630641 is an equidigital number, since it uses as much as digits as its factorization.

8630641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 8630641 is about 2937.7952617567. The cubic root of 8630641 is about 205.1229957917.

The spelling of 8630641 in words is "eight million, six hundred thirty thousand, six hundred forty-one".