996555 has 16 divisors (see below), whose sum is σ = 1822464. Its totient is φ = 455520.

The previous prime is 996551. The next prime is 996563. The reversal of 996555 is 555699.

It is not a de Polignac number, because 996555 - 2² = 996551 is a prime.

996555 is a lucky number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (996551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4641 + ... + 4850.

It is an arithmetic number, because the mean of its divisors is an integer number (113904).

2⁹⁹⁶⁵⁵⁵ is an apocalyptic number.

996555 is a deficient number, since it is larger than the sum of its proper divisors (825909).

996555 is a wasteful number, since it uses less digits than its factorization.

996555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9506.

The product of its digits is 60750, while the sum is 39.

The square root of 996555 is about 998.2760139360. The cubic root of 996555 is about 99.8850345468.

It can be divided in two parts, 996 and 555, that added together give a palindrome (1551).

The spelling of 996555 in words is "nine hundred ninety-six thousand, five hundred fifty-five".