6406893 has 6 divisors (see below), whose sum is σ = 9254414. Its totient is φ = 4271256.

The previous prime is 6406879. The next prime is 6406913. The reversal of 6406893 is 3986046.

6406893 is a `hidden beast` number, since 640 + 6 + 8 + 9 + 3 = 666.

6406893 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6215049 + 191844 = 2493^2 + 438^2 .

It is not a de Polignac number, because 6406893 - 2⁴ = 6406877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6406823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 355930 + ... + 355947.

Almost surely, 2^6406893 is an apocalyptic number.

It is an amenable number.

6406893 is a deficient number, since it is larger than the sum of its proper divisors (2847521).

6406893 is a wasteful number, since it uses less digits than its factorization.

6406893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711883 (or 711880 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 6406893 is about 2531.1841102535. The cubic root of 6406893 is about 185.7301845786.

The spelling of 6406893 in words is "six million, four hundred six thousand, eight hundred ninety-three".