6561862 has 8 divisors (see below), whose sum is σ = 10009800. Its totient is φ = 3225264.

The previous prime is 6561857. The next prime is 6561871. The reversal of 6561862 is 2681656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 27687 + ... + 27922.

It is an arithmetic number, because the mean of its divisors is an integer number (1251225).

Almost surely, 2^6561862 is an apocalyptic number.

6561862 is a deficient number, since it is larger than the sum of its proper divisors (3447938).

6561862 is a wasteful number, since it uses less digits than its factorization.

6561862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55670.

The product of its digits is 17280, while the sum is 34.

The square root of 6561862 is about 2561.6131636139. The cubic root of 6561862 is about 187.2157423085.

The spelling of 6561862 in words is "six million, five hundred sixty-one thousand, eight hundred sixty-two".