996982257 has 4 divisors (see below), whose sum is σ = 1329309680. Its totient is φ = 664654836.

The previous prime is 996982253. The next prime is 996982277. The reversal of 996982257 is 752289699.

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 not a de Polignac number, because 996982257 - 2² = 996982253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 996982197 and 996982206.

It is not an unprimeable number, because it can be changed into a prime (996982253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166163707 + ... + 166163712.

It is an arithmetic number, because the mean of its divisors is an integer number (332327420).

Almost surely, 2^996982257 is an apocalyptic number.

It is an amenable number.

996982257 is a deficient number, since it is larger than the sum of its proper divisors (332327423).

996982257 is a wasteful number, since it uses less digits than its factorization.

996982257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332327422.

The product of its digits is 4898880, while the sum is 57.

The square root of 996982257 is about 31575.0258432198. The cubic root of 996982257 is about 998.9930721032.

The spelling of 996982257 in words is "nine hundred ninety-six million, nine hundred eighty-two thousand, two hundred fifty-seven".