630289089 has 24 divisors (see below), whose sum is σ = 918269352. Its totient is φ = 416586240.

The previous prime is 630289087. The next prime is 630289111. The reversal of 630289089 is 980982036.

630289089 is a `hidden beast` number, since 630 + 2 + 8 + 9 + 0 + 8 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 84272400 + 546016689 = 9180^2 + 23367^2 .

It is not a de Polignac number, because 630289089 - 2¹ = 630289087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630289087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 767299 + ... + 768119.

It is an arithmetic number, because the mean of its divisors is an integer number (38261223).

Almost surely, 2^630289089 is an apocalyptic number.

It is an amenable number.

630289089 is a deficient number, since it is larger than the sum of its proper divisors (287980263).

630289089 is a wasteful number, since it uses less digits than its factorization.

630289089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 1454 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 630289089 is about 25105.5589262617. The cubic root of 630289089 is about 857.3929925092.

The spelling of 630289089 in words is "six hundred thirty million, two hundred eighty-nine thousand, eighty-nine".