9864641 has 8 divisors (see below), whose sum is σ = 10700424. Its totient is φ = 9057280.

The previous prime is 9864637. The next prime is 9864643. The reversal of 9864641 is 1464689.

It can be written as a sum of positive squares in 4 ways, for example, as 384400 + 9480241 = 620^2 + 3079^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9864641 - 2² = 9864637 is a prime.

It is a super-2 number, since 2×9864641² = 194622284117762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9864595 and 9864604.

It is not an unprimeable number, because it can be changed into a prime (9864643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6380 + ... + 7773.

It is an arithmetic number, because the mean of its divisors is an integer number (1337553).

Almost surely, 2^9864641 is an apocalyptic number.

It is an amenable number.

9864641 is a deficient number, since it is larger than the sum of its proper divisors (835783).

9864641 is a wasteful number, since it uses less digits than its factorization.

9864641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14211.

The product of its digits is 41472, while the sum is 38.

The square root of 9864641 is about 3140.8026044309. The cubic root of 9864641 is about 214.4669760053.

The spelling of 9864641 in words is "nine million, eight hundred sixty-four thousand, six hundred forty-one".