9998757 has 6 divisors (see below), whose sum is σ = 14442662. Its totient is φ = 6665832.

The previous prime is 9998753. The next prime is 9998777. The reversal of 9998757 is 7578999.

It can be written as a sum of positive squares in only one way, i.e., 8946081 + 1052676 = 2991^2 + 1026^2 .

It is not a de Polignac number, because 9998757 - 2² = 9998753 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 (9998753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555478 + ... + 555495.

Almost surely, 2^9998757 is an apocalyptic number.

It is an amenable number.

9998757 is a deficient number, since it is larger than the sum of its proper divisors (4443905).

9998757 is a wasteful number, since it uses less digits than its factorization.

9998757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110979 (or 1110976 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 54.

The square root of 9998757 is about 3162.0811185041. The cubic root of 9998757 is about 215.4345420922.

The spelling of 9998757 in words is "nine million, nine hundred ninety-eight thousand, seven hundred fifty-seven".