996202561 has 4 divisors (see below), whose sum is σ = 1008812800. Its totient is φ = 983592324.

The previous prime is 996202511. The next prime is 996202579. The reversal of 996202561 is 165202699.

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, and also an emirpimes, since its reverse is a distinct semiprime: 165202699 = 3019 ⋅54721.

It is a cyclic number.

It is not a de Polignac number, because 996202561 - 2¹⁹ = 995678273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (996202511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6305001 + ... + 6305158.

It is an arithmetic number, because the mean of its divisors is an integer number (252203200).

Almost surely, 2^996202561 is an apocalyptic number.

It is an amenable number.

996202561 is a deficient number, since it is larger than the sum of its proper divisors (12610239).

996202561 is a wasteful number, since it uses less digits than its factorization.

996202561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12610238.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 996202561 is about 31562.6767084162. The cubic root of 996202561 is about 998.7325813286.

The spelling of 996202561 in words is "nine hundred ninety-six million, two hundred two thousand, five hundred sixty-one".