6816772 has 12 divisors (see below), whose sum is σ = 12053020. Its totient is φ = 3373056.

The previous prime is 6816757. The next prime is 6816787. The reversal of 6816772 is 2776186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6816757) and next prime (6816787).

It can be written as a sum of positive squares in 2 ways, for example, as 1218816 + 5597956 = 1104^2 + 2366^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8397 + ... + 9172.

Almost surely, 2^6816772 is an apocalyptic number.

It is an amenable number.

6816772 is a deficient number, since it is larger than the sum of its proper divisors (5236248).

6816772 is a wasteful number, since it uses less digits than its factorization.

6816772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17670 (or 17668 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 6816772 is about 2610.8948657501. The cubic root of 6816772 is about 189.6092801691.

The spelling of 6816772 in words is "six million, eight hundred sixteen thousand, seven hundred seventy-two".