996501994 has 4 divisors (see below), whose sum is σ = 1494752994. Its totient is φ = 498250996.

The previous prime is 996501977. The next prime is 996501997. The reversal of 996501994 is 499105699.

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

It can be written as a sum of positive squares in only one way, i.e., 824551225 + 171950769 = 28715^2 + 13113^2 .

It is not an unprimeable number, because it can be changed into a prime (996501997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249125497 + ... + 249125500.

Almost surely, 2^996501994 is an apocalyptic number.

996501994 is a deficient number, since it is larger than the sum of its proper divisors (498251000).

996501994 is a wasteful number, since it uses less digits than its factorization.

996501994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498250999.

The product of its (nonzero) digits is 787320, while the sum is 52.

The square root of 996501994 is about 31567.4198185408. The cubic root of 996501994 is about 998.8326357911.

The spelling of 996501994 in words is "nine hundred ninety-six million, five hundred one thousand, nine hundred ninety-four".