898865567421 has 8 divisors (see below), whose sum is σ = 1250595572160. Its totient is φ = 573189637152.

The previous prime is 898865567357. The next prime is 898865567447. The reversal of 898865567421 is 124765568898.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 898865567421 - 2⁶ = 898865567357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69), and also a Moran number because the ratio is a prime number: 13027037209 = 898865567421 / (8 + 9 + 8 + 8 + 6 + 5 + 5 + 6 + 7 + 4 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898865567221) 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 7 ways as a sum of consecutive naturals, for example, 6513518536 + ... + 6513518673.

It is an arithmetic number, because the mean of its divisors is an integer number (156324446520).

Almost surely, 2^898865567421 is an apocalyptic number.

It is an amenable number.

898865567421 is a deficient number, since it is larger than the sum of its proper divisors (351730004739).

898865567421 is a wasteful number, since it uses less digits than its factorization.

898865567421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13027037235.

The product of its digits is 232243200, while the sum is 69.

The spelling of 898865567421 in words is "eight hundred ninety-eight billion, eight hundred sixty-five million, five hundred sixty-seven thousand, four hundred twenty-one".