6405061 has 16 divisors (see below), whose sum is σ = 7218288. Its totient is φ = 5644800.

The previous prime is 6405059. The next prime is 6405067. The reversal of 6405061 is 1605046.

It can be written as a sum of positive squares in 8 ways, for example, as 1252161 + 5152900 = 1119^2 + 2270^2 .

It is a cyclic number.

It is not a de Polignac number, because 6405061 - 2¹ = 6405059 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 (6405067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32415 + ... + 32611.

It is an arithmetic number, because the mean of its divisors is an integer number (451143).

Almost surely, 2^6405061 is an apocalyptic number.

6405061 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6405061 is a deficient number, since it is larger than the sum of its proper divisors (813227).

6405061 is a wasteful number, since it uses less digits than its factorization.

6405061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 6405061 is about 2530.8221984169. The cubic root of 6405061 is about 185.7124802022.

The spelling of 6405061 in words is "six million, four hundred five thousand, sixty-one".