9999700 has 54 divisors (see below), whose sum is σ = 22984206. Its totient is φ = 3775680.

The previous prime is 9999677. The next prime is 9999713. The reversal of 9999700 is 79999.

It can be written as a sum of positive squares in 3 ways, for example, as 51984 + 9947716 = 228^2 + 3154^2 .

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35962 + ... + 36238.

Almost surely, 2^9999700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11492103).

9999700 is an abundant number, since it is smaller than the sum of its proper divisors (12984506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9999700 is a wasteful number, since it uses less digits than its factorization.

9999700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 45927, while the sum is 43.

The square root of 9999700 is about 3162.2302256477. The cubic root of 9999700 is about 215.4413145470.

It can be divided in two parts, 99 and 99700, that added together give a palindrome (99799).

The spelling of 9999700 in words is "nine million, nine hundred ninety-nine thousand, seven hundred".