67721000630 has 16 divisors (see below), whose sum is σ = 123963866640. Its totient is φ = 26629274592.

The previous prime is 67721000609. The next prime is 67721000647. The reversal of 67721000630 is 3600012776.

It is a super-2 number, since 2×67721000630² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57390089 + ... + 57391268.

It is an arithmetic number, because the mean of its divisors is an integer number (7747741665).

Almost surely, 2^67721000630 is an apocalyptic number.

67721000630 is a deficient number, since it is larger than the sum of its proper divisors (56242866010).

67721000630 is a wasteful number, since it uses less digits than its factorization.

67721000630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114781423.

The product of its (nonzero) digits is 10584, while the sum is 32.

The spelling of 67721000630 in words is "sixty-seven billion, seven hundred twenty-one million, six hundred thirty", and thus it is an aban number.