6413855 has 24 divisors (see below), whose sum is σ = 9160128. Its totient is φ = 4296768.

The previous prime is 6413821. The next prime is 6413857. The reversal of 6413855 is 5583146.

It is a happy number.

It is not a de Polignac number, because 6413855 - 2²² = 2219551 is a prime.

It is a super-2 number, since 2×6413855² = 82275071922050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6413857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11237 + ... + 11793.

It is an arithmetic number, because the mean of its divisors is an integer number (381672).

Almost surely, 2^6413855 is an apocalyptic number.

6413855 is a deficient number, since it is larger than the sum of its proper divisors (2746273).

6413855 is a wasteful number, since it uses less digits than its factorization.

6413855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 616 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 6413855 is about 2532.5589825313. The cubic root of 6413855 is about 185.7974343082.

The spelling of 6413855 in words is "six million, four hundred thirteen thousand, eight hundred fifty-five".