630513667 has 4 divisors (see below), whose sum is σ = 720587056. Its totient is φ = 540440280.

The previous prime is 630513641. The next prime is 630513691. The reversal of 630513667 is 766315036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630513667 - 2¹⁹ = 629989379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630513067) 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 in 3 ways as a sum of consecutive naturals, for example, 45036684 + ... + 45036697.

It is an arithmetic number, because the mean of its divisors is an integer number (180146764).

Almost surely, 2^630513667 is an apocalyptic number.

630513667 is a deficient number, since it is larger than the sum of its proper divisors (90073389).

630513667 is an equidigital number, since it uses as much as digits as its factorization.

630513667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90073388.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 630513667 is about 25110.0312026887. The cubic root of 630513667 is about 857.4948128442.

The spelling of 630513667 in words is "six hundred thirty million, five hundred thirteen thousand, six hundred sixty-seven".