898073621 has 4 divisors (see below), whose sum is σ = 903264972. Its totient is φ = 892882272.

The previous prime is 898073597. The next prime is 898073623. The reversal of 898073621 is 126370898.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 693268900 + 204804721 = 26330^2 + 14311^2 .

It is a cyclic number.

It is not a de Polignac number, because 898073621 - 2¹⁰ = 898072597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898073623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2595416 + ... + 2595761.

It is an arithmetic number, because the mean of its divisors is an integer number (225816243).

Almost surely, 2^898073621 is an apocalyptic number.

It is an amenable number.

898073621 is a deficient number, since it is larger than the sum of its proper divisors (5191351).

898073621 is a wasteful number, since it uses less digits than its factorization.

898073621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5191350.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 898073621 is about 29967.8764846627. The cubic root of 898073621 is about 964.8000412560.

The spelling of 898073621 in words is "eight hundred ninety-eight million, seventy-three thousand, six hundred twenty-one".