996540 has 48 divisors (see below), whose sum is σ = 2957472. Its totient is φ = 249856.

The previous prime is 996539. The next prime is 996551. The reversal of 996540 is 45699.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 532 + ... + 1508.

It is an arithmetic number, because the mean of its divisors is an integer number (61614).

2⁹⁹⁶⁵⁴⁰ 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 996540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478736).

996540 is an abundant number, since it is smaller than the sum of its proper divisors (1960932).

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

996540 is a wasteful number, since it uses less digits than its factorization.

996540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 996540 is about 998.2685009555. The cubic root of 996540 is about 99.8845333926.

The spelling of 996540 in words is "nine hundred ninety-six thousand, five hundred forty".