9864653 has 2 divisors, whose sum is σ = 9864654. Its totient is φ = 9864652.

The previous prime is 9864649. The next prime is 9864683. The reversal of 9864653 is 3564689.

9864653 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9229444 + 635209 = 3038^2 + 797^2 .

It is an emirp because it is prime and its reverse (3564689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9864653 - 2² = 9864649 is a prime.

It is a super-2 number, since 2×9864653² = 194622757620818, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9864653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9864643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4932326 + 4932327.

It is an arithmetic number, because the mean of its divisors is an integer number (4932327).

Almost surely, 2^9864653 is an apocalyptic number.

It is an amenable number.

9864653 is a deficient number, since it is larger than the sum of its proper divisors (1).

9864653 is an equidigital number, since it uses as much as digits as its factorization.

9864653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 9864653 is about 3140.8045147701. The cubic root of 9864653 is about 214.4670629692.

It can be divided in two parts, 9 and 864653, that multiplied together give a palindrome (7781877).

The spelling of 9864653 in words is "nine million, eight hundred sixty-four thousand, six hundred fifty-three".