6816455 has 12 divisors (see below), whose sum is σ = 8394456. Its totient is φ = 5313600.

The previous prime is 6816449. The next prime is 6816461. The reversal of 6816455 is 5546186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6816449) and next prime (6816461).

It is not a de Polignac number, because 6816455 - 2¹⁴ = 6800071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8000 + ... + 8810.

It is an arithmetic number, because the mean of its divisors is an integer number (699538).

Almost surely, 2^6816455 is an apocalyptic number.

6816455 is a deficient number, since it is larger than the sum of its proper divisors (1578001).

6816455 is an equidigital number, since it uses as much as digits as its factorization.

6816455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898 (or 857 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 6816455 is about 2610.8341578890. The cubic root of 6816455 is about 189.6063409933.

The spelling of 6816455 in words is "six million, eight hundred sixteen thousand, four hundred fifty-five".