6890455 has 32 divisors (see below), whose sum is σ = 10160640. Its totient is φ = 4414080.

The previous prime is 6890453. The next prime is 6890497. The reversal of 6890455 is 5540986.

6890455 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6890455 - 2¹ = 6890453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6890453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16236 + ... + 16654.

It is an arithmetic number, because the mean of its divisors is an integer number (317520).

Almost surely, 2^6890455 is an apocalyptic number.

6890455 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6890455 is a deficient number, since it is larger than the sum of its proper divisors (3270185).

6890455 is a wasteful number, since it uses less digits than its factorization.

6890455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 6890455 is about 2624.9676188479. The cubic root of 6890455 is about 190.2900003554.

The spelling of 6890455 in words is "six million, eight hundred ninety thousand, four hundred fifty-five".