898821646 has 16 divisors (see below), whose sum is σ = 1407520800. Its totient is φ = 429666688.

The previous prime is 898821643. The next prime is 898821653. The reversal of 898821646 is 646128898.

It is a junction number, because it is equal to n+sod(n) for n = 898821593 and 898821602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898821643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144570 + ... + 150658.

It is an arithmetic number, because the mean of its divisors is an integer number (87970050).

Almost surely, 2^898821646 is an apocalyptic number.

898821646 is a deficient number, since it is larger than the sum of its proper divisors (508699154).

898821646 is a wasteful number, since it uses less digits than its factorization.

898821646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9323.

The product of its digits is 1327104, while the sum is 52.

The square root of 898821646 is about 29980.3543341302. The cubic root of 898821646 is about 965.0678345471.

The spelling of 898821646 in words is "eight hundred ninety-eight million, eight hundred twenty-one thousand, six hundred forty-six".