998795664 has 40 divisors (see below), whose sum is σ = 2866914720. Its totient is φ = 332931744.

The previous prime is 998795663. The next prime is 998795669. The reversal of 998795664 is 466597899.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (998795663) 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, 1155582 + ... + 1156445.

It is an arithmetic number, because the mean of its divisors is an integer number (71672868).

Almost surely, 2^998795664 is an apocalyptic number.

It is an amenable number.

998795664 is an abundant number, since it is smaller than the sum of its proper divisors (1868119056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998795664 is a wasteful number, since it uses less digits than its factorization.

998795664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312044 (or 2312032 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The square root of 998795664 is about 31603.7286407791. The cubic root of 998795664 is about 999.5983934004.

The spelling of 998795664 in words is "nine hundred ninety-eight million, seven hundred ninety-five thousand, six hundred sixty-four".