630944719 has 4 divisors (see below), whose sum is σ = 645617896. Its totient is φ = 616271544.

The previous prime is 630944689. The next prime is 630944729. The reversal of 630944719 is 917449036.

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 630944719 - 2⁵ = 630944687 is a prime.

It is a super-2 number, since 2×630944719² = 796182476867977922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 14673133 = 630944719 / (6 + 3 + 0 + 9 + 4 + 4 + 7 + 1 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630944729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7336524 + ... + 7336609.

It is an arithmetic number, because the mean of its divisors is an integer number (161404474).

Almost surely, 2^630944719 is an apocalyptic number.

630944719 is a deficient number, since it is larger than the sum of its proper divisors (14673177).

630944719 is a wasteful number, since it uses less digits than its factorization.

630944719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14673176.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 630944719 is about 25118.6129991288. The cubic root of 630944719 is about 857.6901777103.

The spelling of 630944719 in words is "six hundred thirty million, nine hundred forty-four thousand, seven hundred nineteen".