896656561 has 4 divisors (see below), whose sum is σ = 896716800. Its totient is φ = 896596324.

The previous prime is 896656559. The next prime is 896656589. The reversal of 896656561 is 165656698.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 165656698 = 2 ⋅82828349.

It is a cyclic number.

It is not a de Polignac number, because 896656561 - 2¹ = 896656559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 896656499 and 896656508.

It is not an unprimeable number, because it can be changed into a prime (896656861) 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, 10200 + ... + 43558.

It is an arithmetic number, because the mean of its divisors is an integer number (224179200).

Almost surely, 2^896656561 is an apocalyptic number.

It is an amenable number.

896656561 is a deficient number, since it is larger than the sum of its proper divisors (60239).

896656561 is a wasteful number, since it uses less digits than its factorization.

896656561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60238.

The product of its digits is 2332800, while the sum is 52.

The square root of 896656561 is about 29944.2241676087. The cubic root of 896656561 is about 964.2923251730.

The spelling of 896656561 in words is "eight hundred ninety-six million, six hundred fifty-six thousand, five hundred sixty-one".