898643656 has 32 divisors (see below), whose sum is σ = 1715333760. Its totient is φ = 441285952.

The previous prime is 898643609. The next prime is 898643657. The reversal of 898643656 is 656346898.

It is a happy number.

It is a super-3 number, since 3×898643656³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 898643597 and 898643606.

It is not an unprimeable number, because it can be changed into a prime (898643657) 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 7 ways as a sum of consecutive naturals, for example, 110961 + ... + 118783.

It is an arithmetic number, because the mean of its divisors is an integer number (53604180).

Almost surely, 2^898643656 is an apocalyptic number.

It is an amenable number.

898643656 is a deficient number, since it is larger than the sum of its proper divisors (816690104).

898643656 is a wasteful number, since it uses less digits than its factorization.

898643656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8085 (or 8081 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 55.

The square root of 898643656 is about 29977.3857432565. The cubic root of 898643656 is about 965.0041275204.

The spelling of 898643656 in words is "eight hundred ninety-eight million, six hundred forty-three thousand, six hundred fifty-six".