630989599 has 4 divisors (see below), whose sum is σ = 631346464. Its totient is φ = 630632736.

The previous prime is 630989591. The next prime is 630989609. The reversal of 630989599 is 995989036.

630989599 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 630989599 - 2³ = 630989591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630989591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175767 + ... + 179320.

It is an arithmetic number, because the mean of its divisors is an integer number (157836616).

Almost surely, 2^630989599 is an apocalyptic number.

630989599 is a deficient number, since it is larger than the sum of its proper divisors (356865).

630989599 is a wasteful number, since it uses less digits than its factorization.

630989599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356864.

The product of its (nonzero) digits is 4723920, while the sum is 58.

The square root of 630989599 is about 25119.5063446717. The cubic root of 630989599 is about 857.7105134711.

The spelling of 630989599 in words is "six hundred thirty million, nine hundred eighty-nine thousand, five hundred ninety-nine".