998008618 has 8 divisors (see below), whose sum is σ = 1497468420. Its totient is φ = 498852480.

The previous prime is 998008591. The next prime is 998008619. The reversal of 998008618 is 816800899.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 997485889 + 522729 = 31583^2 + 723^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (998008619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67513 + ... + 80956.

Almost surely, 2^998008618 is an apocalyptic number.

998008618 is a deficient number, since it is larger than the sum of its proper divisors (499459802).

998008618 is a wasteful number, since it uses less digits than its factorization.

998008618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151832.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 998008618 is about 31591.2743965798. The cubic root of 998008618 is about 999.3357648894.

The spelling of 998008618 in words is "nine hundred ninety-eight million, eight thousand, six hundred eighteen".