6411861 has 6 divisors (see below), whose sum is σ = 9261590. Its totient is φ = 4274568.

The previous prime is 6411851. The next prime is 6411869. The reversal of 6411861 is 1681146.

6411861 is a `hidden beast` number, since 641 + 18 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5731236 + 680625 = 2394^2 + 825^2 .

It is not a de Polignac number, because 6411861 - 2⁵ = 6411829 is a prime.

It is a super-2 number, since 2×6411861² = 82223922966642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6411869) 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, 356206 + ... + 356223.

Almost surely, 2^6411861 is an apocalyptic number.

It is an amenable number.

6411861 is a deficient number, since it is larger than the sum of its proper divisors (2849729).

6411861 is a wasteful number, since it uses less digits than its factorization.

6411861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712435 (or 712432 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 6411861 is about 2532.1652789658. The cubic root of 6411861 is about 185.7781781570.

The spelling of 6411861 in words is "six million, four hundred eleven thousand, eight hundred sixty-one".