9556861 has 4 divisors (see below), whose sum is σ = 9567712. Its totient is φ = 9546012.

The previous prime is 9556849. The next prime is 9556871. The reversal of 9556861 is 1686559.

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 a cyclic number.

It is not a de Polignac number, because 9556861 - 2¹⁷ = 9425789 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 (9556831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3975 + ... + 5908.

It is an arithmetic number, because the mean of its divisors is an integer number (2391928).

Almost surely, 2^9556861 is an apocalyptic number.

It is an amenable number.

9556861 is a deficient number, since it is larger than the sum of its proper divisors (10851).

9556861 is an equidigital number, since it uses as much as digits as its factorization.

9556861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10850.

The product of its digits is 64800, while the sum is 40.

The square root of 9556861 is about 3091.4173124960. The cubic root of 9556861 is about 212.2128883789.

The spelling of 9556861 in words is "nine million, five hundred fifty-six thousand, eight hundred sixty-one".