630306905629 has 8 divisors (see below), whose sum is σ = 639040434552. Its totient is φ = 621576057600.

The previous prime is 630306905623. The next prime is 630306905647. The reversal of 630306905629 is 926509603036.

It can be written as a sum of positive squares in 4 ways, for example, as 2604060900 + 627702844729 = 51030^2 + 792277^2 .

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 630306905629 - 2³³ = 621716971037 is a prime.

It is a super-2 number, since 2×630306905629² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630306905623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194422 + ... + 1139479.

It is an arithmetic number, because the mean of its divisors is an integer number (79880054319).

Almost surely, 2^630306905629 is an apocalyptic number.

It is an amenable number.

630306905629 is a deficient number, since it is larger than the sum of its proper divisors (8733528923).

630306905629 is a wasteful number, since it uses less digits than its factorization.

630306905629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340447.

The product of its (nonzero) digits is 1574640, while the sum is 49.

The spelling of 630306905629 in words is "six hundred thirty billion, three hundred six million, nine hundred five thousand, six hundred twenty-nine".