6618455 has 4 divisors (see below), whose sum is σ = 7942152. Its totient is φ = 5294760.

The previous prime is 6618433. The next prime is 6618463. The reversal of 6618455 is 5548166.

It is a happy number.

6618455 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6618455 - 2¹⁰ = 6617431 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 3 ways as a sum of consecutive naturals, for example, 661841 + ... + 661850.

It is an arithmetic number, because the mean of its divisors is an integer number (1985538).

Almost surely, 2^6618455 is an apocalyptic number.

6618455 is a deficient number, since it is larger than the sum of its proper divisors (1323697).

6618455 is a wasteful number, since it uses less digits than its factorization.

6618455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323696.

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

The square root of 6618455 is about 2572.6358078826. The cubic root of 6618455 is about 187.7524185520.

The spelling of 6618455 in words is "six million, six hundred eighteen thousand, four hundred fifty-five".