9998705 has 8 divisors (see below), whose sum is σ = 12133800. Its totient is φ = 7908736.

The previous prime is 9998701. The next prime is 9998719. The reversal of 9998705 is 5078999.

It can be written as a sum of positive squares in 4 ways, for example, as 829921 + 9168784 = 911^2 + 3028^2 .

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 9998705 - 2² = 9998701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9998705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998701) 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, 10790 + ... + 11679.

It is an arithmetic number, because the mean of its divisors is an integer number (1516725).

Almost surely, 2^9998705 is an apocalyptic number.

It is an amenable number.

9998705 is a deficient number, since it is larger than the sum of its proper divisors (2135095).

9998705 is a wasteful number, since it uses less digits than its factorization.

9998705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22563.

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 9998705 is about 3162.0728960604. The cubic root of 9998705 is about 215.4341686253.

The spelling of 9998705 in words is "nine million, nine hundred ninety-eight thousand, seven hundred five".