996609745 has 4 divisors (see below), whose sum is σ = 1195931700. Its totient is φ = 797287792.

The previous prime is 996609739. The next prime is 996609749. The reversal of 996609745 is 547906699.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 134189056 + 862420689 = 11584^2 + 29367^2 .

It is a cyclic number.

It is not a de Polignac number, because 996609745 - 2¹³ = 996601553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (996609749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99660970 + ... + 99660979.

It is an arithmetic number, because the mean of its divisors is an integer number (298982925).

Almost surely, 2^996609745 is an apocalyptic number.

It is an amenable number.

996609745 is a deficient number, since it is larger than the sum of its proper divisors (199321955).

996609745 is a wasteful number, since it uses less digits than its factorization.

996609745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199321954.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The square root of 996609745 is about 31569.1264529128. The cubic root of 996609745 is about 998.8686354971.

The spelling of 996609745 in words is "nine hundred ninety-six million, six hundred nine thousand, seven hundred forty-five".