9656861 has 4 divisors (see below), whose sum is σ = 9688224. Its totient is φ = 9625500.

The previous prime is 9656851. The next prime is 9656863. The reversal of 9656861 is 1686569.

9656861 is digitally balanced in base 2, 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9656861 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 (9656863) 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, 15215 + ... + 15836.

It is an arithmetic number, because the mean of its divisors is an integer number (2422056).

Almost surely, 2^9656861 is an apocalyptic number.

It is an amenable number.

9656861 is a deficient number, since it is larger than the sum of its proper divisors (31363).

9656861 is a wasteful number, since it uses less digits than its factorization.

9656861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31362.

The product of its digits is 77760, while the sum is 41.

The square root of 9656861 is about 3107.5490342069. The cubic root of 9656861 is about 212.9504980220.

The spelling of 9656861 in words is "nine million, six hundred fifty-six thousand, eight hundred sixty-one".