996403775 has 6 divisors (see below), whose sum is σ = 1235540712. Its totient is φ = 797123000.

The previous prime is 996403753. The next prime is 996403777. The reversal of 996403775 is 577304699.

It is a de Polignac number, because none of the positive numbers 2^k-996403775 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996403777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19928051 + ... + 19928100.

It is an arithmetic number, because the mean of its divisors is an integer number (205923452).

Almost surely, 2^996403775 is an apocalyptic number.

996403775 is a deficient number, since it is larger than the sum of its proper divisors (239136937).

996403775 is a wasteful number, since it uses less digits than its factorization.

996403775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39856161 (or 39856156 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 50.

The square root of 996403775 is about 31565.8640781462. The cubic root of 996403775 is about 998.7998184739.

The spelling of 996403775 in words is "nine hundred ninety-six million, four hundred three thousand, seven hundred seventy-five".