9993690 has 96 divisors (see below), whose sum is σ = 30775680. Its totient is φ = 2201472.

The previous prime is 9993679. The next prime is 9993701. The reversal of 9993690 is 963999.

9993690 = 113² + 114² + ... + 315².

It is an interprime number because it is at equal distance from previous prime (9993679) and next prime (9993701).

It is a super-2 number, since 2×9993690² = 199747679632200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17997 + ... + 18543.

It is an arithmetic number, because the mean of its divisors is an integer number (320580).

Almost surely, 2^9993690 is an apocalyptic number.

9993690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9993690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15387840).

9993690 is an abundant number, since it is smaller than the sum of its proper divisors (20781990).

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

9993690 is a wasteful number, since it uses less digits than its factorization.

9993690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 9993690 is about 3161.2798041300. The cubic root of 9993690 is about 215.3981445256.

The spelling of 9993690 in words is "nine million, nine hundred ninety-three thousand, six hundred ninety".