6722500 has 30 divisors (see below), whose sum is σ = 14706230. Its totient is φ = 2688000.

The previous prime is 6722479. The next prime is 6722537. The reversal of 6722500 is 52276.

It can be written as a sum of positive squares in 5 ways, for example, as 4596736 + 2125764 = 2144^2 + 1458^2 .

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 in 9 ways as a sum of consecutive naturals, for example, 1156 + ... + 3844.

Almost surely, 2^6722500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6722500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7353115).

6722500 is an abundant number, since it is smaller than the sum of its proper divisors (7983730).

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

6722500 is a wasteful number, since it uses less digits than its factorization.

6722500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713 (or 2696 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 6722500 is about 2592.7784324928. The cubic root of 6722500 is about 188.7311575711.

Adding to 6722500 its reverse (52276), we get a palindrome (6774776).

The spelling of 6722500 in words is "six million, seven hundred twenty-two thousand, five hundred".