996564458 has 4 divisors (see below), whose sum is σ = 1494846690. Its totient is φ = 498282228.

The previous prime is 996564451. The next prime is 996564467. The reversal of 996564458 is 854465699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 854465699 = 1087 ⋅786077.

It can be written as a sum of positive squares in only one way, i.e., 891440449 + 105124009 = 29857^2 + 10253^2 .

It is not an unprimeable number, because it can be changed into a prime (996564451) 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 as a sum of consecutive naturals, namely, 249141113 + ... + 249141116.

Almost surely, 2^996564458 is an apocalyptic number.

996564458 is a deficient number, since it is larger than the sum of its proper divisors (498282232).

996564458 is a wasteful number, since it uses less digits than its factorization.

996564458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498282231.

The product of its digits is 9331200, while the sum is 56.

The square root of 996564458 is about 31568.4091775306. The cubic root of 996564458 is about 998.8535053858.

The spelling of 996564458 in words is "nine hundred ninety-six million, five hundred sixty-four thousand, four hundred fifty-eight".