6729636 has 12 divisors (see below), whose sum is σ = 15702512. Its totient is φ = 2243208.

The previous prime is 6729631. The next prime is 6729643. The reversal of 6729636 is 6369276.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 6729594 and 6729603.

It is not an unprimeable number, because it can be changed into a prime (6729631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280390 + ... + 280413.

Almost surely, 2^6729636 is an apocalyptic number.

It is an amenable number.

6729636 is an abundant number, since it is smaller than the sum of its proper divisors (8972876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6729636 is a wasteful number, since it uses less digits than its factorization.

6729636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560810 (or 560808 counting only the distinct ones).

The product of its digits is 81648, while the sum is 39.

The square root of 6729636 is about 2594.1541974216. The cubic root of 6729636 is about 188.7979139504.

The spelling of 6729636 in words is "six million, seven hundred twenty-nine thousand, six hundred thirty-six".