6809636 has 6 divisors (see below), whose sum is σ = 11916870. Its totient is φ = 3404816.

The previous prime is 6809629. The next prime is 6809641. The reversal of 6809636 is 6369086.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6553600 + 256036 = 2560^2 + 506^2 .

It is a super-2 number, since 2×6809636² = 92742284904992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6809636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 851201 + ... + 851208.

It is an arithmetic number, because the mean of its divisors is an integer number (1986145).

Almost surely, 2^6809636 is an apocalyptic number.

It is an amenable number.

6809636 is a deficient number, since it is larger than the sum of its proper divisors (5107234).

6809636 is a wasteful number, since it uses less digits than its factorization.

6809636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702413 (or 1702411 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 6809636 is about 2609.5279266565. The cubic root of 6809636 is about 189.5430941876.

The spelling of 6809636 in words is "six million, eight hundred nine thousand, six hundred thirty-six".