6406161 has 16 divisors (see below), whose sum is σ = 9201600. Its totient is φ = 3949568.

The previous prime is 6406151. The next prime is 6406177. The reversal of 6406161 is 1616046.

It is a cyclic number.

It is not a de Polignac number, because 6406161 - 2⁹ = 6405649 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6406111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1945 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (575100).

Almost surely, 2^6406161 is an apocalyptic number.

It is an amenable number.

6406161 is a deficient number, since it is larger than the sum of its proper divisors (2795439).

6406161 is a wasteful number, since it uses less digits than its factorization.

6406161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 6406161 is about 2531.0395097667. The cubic root of 6406161 is about 185.7231109641.

The spelling of 6406161 in words is "six million, four hundred six thousand, one hundred sixty-one".