630260066021 has 8 divisors (see below), whose sum is σ = 637777541400. Its totient is φ = 622786424832.

The previous prime is 630260066011. The next prime is 630260066039. The reversal of 630260066021 is 120660062036.

It can be written as a sum of positive squares in 4 ways, for example, as 5085025 + 630254980996 = 2255^2 + 793886^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 630260066021 - 2²² = 630255871717 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 (630260066011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10929620 + ... + 10987133.

It is an arithmetic number, because the mean of its divisors is an integer number (79722192675).

Almost surely, 2^630260066021 is an apocalyptic number.

It is an amenable number.

630260066021 is a deficient number, since it is larger than the sum of its proper divisors (7517475379).

630260066021 is a wasteful number, since it uses less digits than its factorization.

630260066021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21917095.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 630260066021 in words is "six hundred thirty billion, two hundred sixty million, sixty-six thousand, twenty-one".