630887801 has 2 divisors, whose sum is σ = 630887802. Its totient is φ = 630887800.

The previous prime is 630887791. The next prime is 630887849. The reversal of 630887801 is 108788036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 626200576 + 4687225 = 25024^2 + 2165^2 .

It is a cyclic number.

It is not a de Polignac number, because 630887801 - 2⁶ = 630887737 is a prime.

It is equal to p_32850977 and since 630887801 and 32850977 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (630887891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315443900 + 315443901.

It is an arithmetic number, because the mean of its divisors is an integer number (315443901).

Almost surely, 2^630887801 is an apocalyptic number.

It is an amenable number.

630887801 is a deficient number, since it is larger than the sum of its proper divisors (1).

630887801 is an equidigital number, since it uses as much as digits as its factorization.

630887801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 630887801 is about 25117.4799890435. The cubic root of 630887801 is about 857.6643859750.

The spelling of 630887801 in words is "six hundred thirty million, eight hundred eighty-seven thousand, eight hundred one".