6864405 has 16 divisors (see below), whose sum is σ = 11019264. Its totient is φ = 3648960.

The previous prime is 6864383. The next prime is 6864427. The reversal of 6864405 is 5044686.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6864383) and next prime (6864427).

It is not a de Polignac number, because 6864405 - 2⁹ = 6863893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5772 + ... + 6858.

It is an arithmetic number, because the mean of its divisors is an integer number (688704).

Almost surely, 2^6864405 is an apocalyptic number.

It is an amenable number.

6864405 is a deficient number, since it is larger than the sum of its proper divisors (4154859).

6864405 is a wasteful number, since it uses less digits than its factorization.

6864405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 6864405 is about 2620.0009541983. Note that the first 3 decimals coincide. The cubic root of 6864405 is about 190.0498945603.

The spelling of 6864405 in words is "six million, eight hundred sixty-four thousand, four hundred five".