996861853 has 4 divisors (see below), whose sum is σ = 1073543548. Its totient is φ = 920180160.

The previous prime is 996861851. The next prime is 996861889. The reversal of 996861853 is 358168699.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 328225689 + 668636164 = 18117^2 + 25858^2 .

It is a cyclic number.

It is not a de Polignac number, because 996861853 - 2¹ = 996861851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 996861794 and 996861803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996861851) 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, 38340828 + ... + 38340853.

It is an arithmetic number, because the mean of its divisors is an integer number (268385887).

Almost surely, 2^996861853 is an apocalyptic number.

It is an amenable number.

996861853 is a deficient number, since it is larger than the sum of its proper divisors (76681695).

996861853 is a wasteful number, since it uses less digits than its factorization.

996861853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76681694.

The product of its digits is 2799360, while the sum is 55.

The square root of 996861853 is about 31573.1191522155. The cubic root of 996861853 is about 998.9528548698.

The spelling of 996861853 in words is "nine hundred ninety-six million, eight hundred sixty-one thousand, eight hundred fifty-three".