998642960699 has 4 divisors (see below), whose sum is σ = 1004415463536. Its totient is φ = 992870457864.

The previous prime is 998642960681. The next prime is 998642960797. The reversal of 998642960699 is 996069246899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 998642960699 - 2⁸ = 998642960443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998642960659) 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, 2886251159 + ... + 2886251504.

It is an arithmetic number, because the mean of its divisors is an integer number (251103865884).

Almost surely, 2^998642960699 is an apocalyptic number.

998642960699 is a deficient number, since it is larger than the sum of its proper divisors (5772502837).

998642960699 is a wasteful number, since it uses less digits than its factorization.

998642960699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772502836.

The product of its (nonzero) digits is 816293376, while the sum is 77.

The spelling of 998642960699 in words is "nine hundred ninety-eight billion, six hundred forty-two million, nine hundred sixty thousand, six hundred ninety-nine".