6405455 has 16 divisors (see below), whose sum is σ = 8838720. Its totient is φ = 4365312.

The previous prime is 6405397. The next prime is 6405457. The reversal of 6405455 is 5545046.

It is not a de Polignac number, because 6405455 - 2⁶ = 6405391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6405457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6431 + ... + 7359.

It is an arithmetic number, because the mean of its divisors is an integer number (552420).

Almost surely, 2^6405455 is an apocalyptic number.

6405455 is a deficient number, since it is larger than the sum of its proper divisors (2433265).

6405455 is a wasteful number, since it uses less digits than its factorization.

6405455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 6405455 is about 2530.9000375361. The cubic root of 6405455 is about 185.7162880877.

The spelling of 6405455 in words is "six million, four hundred five thousand, four hundred fifty-five".