6402855 has 32 divisors (see below), whose sum is σ = 10888704. Its totient is φ = 3206016.

The previous prime is 6402841. The next prime is 6402859. The reversal of 6402855 is 5582046.

6402855 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6402855 - 2⁴ = 6402839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22977 + ... + 23253.

It is an arithmetic number, because the mean of its divisors is an integer number (340272).

Almost surely, 2^6402855 is an apocalyptic number.

6402855 is a deficient number, since it is larger than the sum of its proper divisors (4485849).

6402855 is a wasteful number, since it uses less digits than its factorization.

6402855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 6402855 is about 2530.3863341395. The cubic root of 6402855 is about 185.6911570239.

The spelling of 6402855 in words is "six million, four hundred two thousand, eight hundred fifty-five".