997002 has 32 divisors (see below), whose sum is σ = 2280000. Its totient is φ = 322704.

The previous prime is 997001. The next prime is 997013. The reversal of 997002 is 200799.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (997001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1749 + ... + 2247.

It is an arithmetic number, because the mean of its divisors is an integer number (71250).

2⁹⁹⁷⁰⁰² is an apocalyptic number.

It is a pronic number, being equal to 998×999.

It is a practical number, because each smaller number is the sum of distinct divisors of 997002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140000).

997002 is an abundant number, since it is smaller than the sum of its proper divisors (1282998).

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

997002 is a wasteful number, since it uses less digits than its factorization.

997002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 997002 is about 998.4998748122. The cubic root of 997002 is about 99.8999666333.

The spelling of 997002 in words is "nine hundred ninety-seven thousand, two".