996641 has 4 divisors (see below), whose sum is σ = 999984. Its totient is φ = 993300.

The previous prime is 996637. The next prime is 996647. The reversal of 996641 is 146699.

996641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 996641 - 2² = 996637 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (996647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1175 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (249996).

2⁹⁹⁶⁶⁴¹ is an apocalyptic number.

It is an amenable number.

996641 is a deficient number, since it is larger than the sum of its proper divisors (3343).

996641 is a wasteful number, since it uses less digits than its factorization.

996641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342.

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

The square root of 996641 is about 998.3190872662. The cubic root of 996641 is about 99.8879077335.

The spelling of 996641 in words is "nine hundred ninety-six thousand, six hundred forty-one".