993860 has 48 divisors (see below), whose sum is σ = 2472960. Its totient is φ = 328320.

The previous prime is 993851. The next prime is 993869. The reversal of 993860 is 68399.

It is an interprime number because it is at equal distance from previous prime (993851) and next prime (993869).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 993860.

It is not an unprimeable number, because it can be changed into a prime (993869) by changing a digit.

993860 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4226 + ... + 4454.

It is an arithmetic number, because the mean of its divisors is an integer number (51520).

2⁹⁹³⁸⁶⁰ 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 993860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236480).

993860 is an abundant number, since it is smaller than the sum of its proper divisors (1479100).

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

993860 is a wasteful number, since it uses less digits than its factorization.

993860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 993860 is about 996.9252730270. The cubic root of 993860 is about 99.7949130142.

The spelling of 993860 in words is "nine hundred ninety-three thousand, eight hundred sixty".