630783089 has 8 divisors (see below), whose sum is σ = 653083560. Its totient is φ = 608519296.

The previous prime is 630782969. The next prime is 630783103. The reversal of 630783089 is 980387036.

It can be written as a sum of positive squares in 4 ways, for example, as 69472225 + 561310864 = 8335^2 + 23692^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 630783089 - 2¹⁶ = 630717553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630783389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28517 + ... + 45549.

It is an arithmetic number, because the mean of its divisors is an integer number (81635445).

Almost surely, 2^630783089 is an apocalyptic number.

It is an amenable number.

630783089 is a deficient number, since it is larger than the sum of its proper divisors (22300471).

630783089 is a wasteful number, since it uses less digits than its factorization.

630783089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18339.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 630783089 is about 25115.3954577665. The cubic root of 630783089 is about 857.6169328874.

The spelling of 630783089 in words is "six hundred thirty million, seven hundred eighty-three thousand, eighty-nine".