630642005645 has 8 divisors (see below), whose sum is σ = 761301967104. Its totient is φ = 501492564304.

The previous prime is 630642005551. The next prime is 630642005663. The reversal of 630642005645 is 546500246036.

It is a happy number.

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 630642005645 - 2¹⁶ = 630641940109 is a prime.

It is a super-3 number, since 3×630642005645³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377629109 + ... + 377630778.

It is an arithmetic number, because the mean of its divisors is an integer number (95162745888).

Almost surely, 2^630642005645 is an apocalyptic number.

It is an amenable number.

630642005645 is a deficient number, since it is larger than the sum of its proper divisors (130659961459).

630642005645 is a wasteful number, since it uses less digits than its factorization.

630642005645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755260059.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 630642005645 in words is "six hundred thirty billion, six hundred forty-two million, five thousand, six hundred forty-five".