896621790961 has 4 divisors (see below), whose sum is σ = 965592697972. Its totient is φ = 827650883952.

The previous prime is 896621790941. The next prime is 896621790973. The reversal of 896621790961 is 169097126698.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169097126698 = 2 ⋅84548563349.

It can be written as a sum of positive squares in 2 ways, for example, as 304731600625 + 591890190336 = 552025^2 + 769344^2 .

It is a cyclic number.

It is not a de Polignac number, because 896621790961 - 2¹³ = 896621782769 is a prime.

It is a super-2 number, since 2×896621790961² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 896621790893 and 896621790902.

It is not an unprimeable number, because it can be changed into a prime (896621790941) 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 in 3 ways as a sum of consecutive naturals, for example, 34485453486 + ... + 34485453511.

It is an arithmetic number, because the mean of its divisors is an integer number (241398174493).

Almost surely, 2^896621790961 is an apocalyptic number.

It is an amenable number.

896621790961 is a deficient number, since it is larger than the sum of its proper divisors (68970907011).

896621790961 is a wasteful number, since it uses less digits than its factorization.

896621790961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68970907010.

The product of its (nonzero) digits is 17635968, while the sum is 64.

The spelling of 896621790961 in words is "eight hundred ninety-six billion, six hundred twenty-one million, seven hundred ninety thousand, nine hundred sixty-one".