6291085 has 4 divisors (see below), whose sum is σ = 7549308. Its totient is φ = 5032864.

The previous prime is 6291079. The next prime is 6291119. The reversal of 6291085 is 5801926.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3090564 + 3200521 = 1758^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 6291085 - 2⁹ = 6290573 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

6291085 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629104 + ... + 629113.

It is an arithmetic number, because the mean of its divisors is an integer number (1887327).

Almost surely, 2^6291085 is an apocalyptic number.

It is an amenable number.

6291085 is a deficient number, since it is larger than the sum of its proper divisors (1258223).

6291085 is a wasteful number, since it uses less digits than its factorization.

6291085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258222.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 6291085 is about 2508.2035403850. The cubic root of 6291085 is about 184.6043162212.

The spelling of 6291085 in words is "six million, two hundred ninety-one thousand, eighty-five".