998717634 has 32 divisors (see below), whose sum is σ = 2336184000. Its totient is φ = 315384192.

The previous prime is 998717633. The next prime is 998717659. The reversal of 998717634 is 436717899.

It is a happy number.

998717634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (998717633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485679 + ... + 487730.

It is an arithmetic number, because the mean of its divisors is an integer number (73005750).

Almost surely, 2^998717634 is an apocalyptic number.

998717634 is an abundant number, since it is smaller than the sum of its proper divisors (1337466366).

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

998717634 is a wasteful number, since it uses less digits than its factorization.

998717634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973439 (or 973433 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 998717634 is about 31602.4941104338. The cubic root of 998717634 is about 999.5723618183.

The spelling of 998717634 in words is "nine hundred ninety-eight million, seven hundred seventeen thousand, six hundred thirty-four".