898366561 has 4 divisors (see below), whose sum is σ = 898962624. Its totient is φ = 897770500.

The previous prime is 898366559. The next prime is 898366583. The reversal of 898366561 is 165663898.

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 a cyclic number.

It is not a de Polignac number, because 898366561 - 2¹ = 898366559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 898366499 and 898366508.

It is not an unprimeable number, because it can be changed into a prime (898366541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295765 + ... + 298786.

It is an arithmetic number, because the mean of its divisors is an integer number (224740656).

Almost surely, 2^898366561 is an apocalyptic number.

It is an amenable number.

898366561 is a deficient number, since it is larger than the sum of its proper divisors (596063).

898366561 is a wasteful number, since it uses less digits than its factorization.

898366561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596062.

The product of its digits is 1866240, while the sum is 52.

The square root of 898366561 is about 29972.7636530234. The cubic root of 898366561 is about 964.9049316173.

The spelling of 898366561 in words is "eight hundred ninety-eight million, three hundred sixty-six thousand, five hundred sixty-one".