6261861 has 4 divisors (see below), whose sum is σ = 8349152. Its totient is φ = 4174572.

The previous prime is 6261851. The next prime is 6261863. The reversal of 6261861 is 1681626.

6261861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6261861 - 2¹³ = 6253669 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6261863) 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 3 ways as a sum of consecutive naturals, for example, 1043641 + ... + 1043646.

It is an arithmetic number, because the mean of its divisors is an integer number (2087288).

Almost surely, 2^6261861 is an apocalyptic number.

It is an amenable number.

6261861 is a deficient number, since it is larger than the sum of its proper divisors (2087291).

6261861 is a wasteful number, since it uses less digits than its factorization.

6261861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087290.

The product of its digits is 3456, while the sum is 30.

The square root of 6261861 is about 2502.3710756001. The cubic root of 6261861 is about 184.3180247587.

The spelling of 6261861 in words is "six million, two hundred sixty-one thousand, eight hundred sixty-one".