996867609 has 4 divisors (see below), whose sum is σ = 1329156816. Its totient is φ = 664578404.

The previous prime is 996867593. The next prime is 996867617. The reversal of 996867609 is 906768699.

It is a happy number.

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 996867609 - 2⁴ = 996867593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (996867629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166144599 + ... + 166144604.

It is an arithmetic number, because the mean of its divisors is an integer number (332289204).

Almost surely, 2^996867609 is an apocalyptic number.

It is an amenable number.

996867609 is a deficient number, since it is larger than the sum of its proper divisors (332289207).

996867609 is a wasteful number, since it uses less digits than its factorization.

996867609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332289206.

The product of its (nonzero) digits is 8817984, while the sum is 60.

The square root of 996867609 is about 31573.2103055739. The cubic root of 996867609 is about 998.9547775573.

It can be divided in two parts, 9968 and 67609, that added together give a palindrome (77577).

The spelling of 996867609 in words is "nine hundred ninety-six million, eight hundred sixty-seven thousand, six hundred nine".