630806193664 has 20 divisors (see below), whose sum is σ = 1260380345004. Its totient is φ = 315403096576.

The previous prime is 630806193643. The next prime is 630806193673. The reversal of 630806193664 is 466391608036.

It is a super-3 number, since 3×630806193664³ (a number of 36 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 616021162 + ... + 616022185.

Almost surely, 2^630806193664 is an apocalyptic number.

630806193664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

630806193664 is a deficient number, since it is larger than the sum of its proper divisors (629574151340).

630806193664 is an equidigital number, since it uses as much as digits as its factorization.

630806193664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232043365 (or 1232043349 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 630806193664 in words is "six hundred thirty billion, eight hundred six million, one hundred ninety-three thousand, six hundred sixty-four".