6620736 has 28 divisors (see below), whose sum is σ = 17517872. Its totient is φ = 2206848.

The previous prime is 6620717. The next prime is 6620741. The reversal of 6620736 is 6370266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17050 + ... + 17433.

Almost surely, 2^6620736 is an apocalyptic number.

It is an amenable number.

6620736 is an abundant number, since it is smaller than the sum of its proper divisors (10897136).

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

6620736 is a wasteful number, since it uses less digits than its factorization.

6620736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34498 (or 34488 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 6620736 is about 2573.0790893402. The cubic root of 6620736 is about 187.7739852206.

It can be divided in two parts, 66 and 20736, that added together give a palindrome (20802).

The spelling of 6620736 in words is "six million, six hundred twenty thousand, seven hundred thirty-six".