9985740 has 24 divisors (see below), whose sum is σ = 27960240. Its totient is φ = 2662848.

The previous prime is 9985739. The next prime is 9985753. The reversal of 9985740 is 475899.

9985740 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9985692 and 9985701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83155 + ... + 83274.

It is an arithmetic number, because the mean of its divisors is an integer number (1165010).

Almost surely, 2^9985740 is an apocalyptic number.

It is an amenable number.

9985740 is an abundant number, since it is smaller than the sum of its proper divisors (17974500).

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

9985740 is a wasteful number, since it uses less digits than its factorization.

9985740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166441 (or 166439 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 9985740 is about 3160.0221518211. The cubic root of 9985740 is about 215.3410128246.

The spelling of 9985740 in words is "nine million, nine hundred eighty-five thousand, seven hundred forty".