898306561 has 16 divisors (see below), whose sum is σ = 969550848. Its totient is φ = 829857600.

The previous prime is 898306559. The next prime is 898306573. The reversal of 898306561 is 165603898.

It is not a de Polignac number, because 898306561 - 2¹ = 898306559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (898306501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481771 + ... + 483631.

It is an arithmetic number, because the mean of its divisors is an integer number (60596928).

Almost surely, 2^898306561 is an apocalyptic number.

It is an amenable number.

898306561 is a deficient number, since it is larger than the sum of its proper divisors (71244287).

898306561 is a wasteful number, since it uses less digits than its factorization.

898306561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 898306561 is about 29971.7627276075. The cubic root of 898306561 is about 964.8834498201.

The spelling of 898306561 in words is "eight hundred ninety-eight million, three hundred six thousand, five hundred sixty-one".