6696400 has 30 divisors (see below), whose sum is σ = 16089062. Its totient is φ = 2678400.

The previous prime is 6696383. The next prime is 6696451. The reversal of 6696400 is 46966.

It can be written as a sum of positive squares in 3 ways, for example, as 1926544 + 4769856 = 1388^2 + 2184^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 7971 + ... + 8770.

Almost surely, 2^6696400 is an apocalyptic number.

It is an amenable number.

6696400 is an abundant number, since it is smaller than the sum of its proper divisors (9392662).

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

6696400 is a wasteful number, since it uses less digits than its factorization.

6696400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16759 (or 16748 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 6696400 is about 2587.7403270035. The cubic root of 6696400 is about 188.4865922117.

The spelling of 6696400 in words is "six million, six hundred ninety-six thousand, four hundred".