998370663 has 16 divisors (see below), whose sum is σ = 1360966656. Its totient is φ = 650708640.

The previous prime is 998370647. The next prime is 998370691. The reversal of 998370663 is 366073899.

It is a happy number.

It is not a de Polignac number, because 998370663 - 2⁴ = 998370647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998377663) 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, 146553 + ... + 153213.

It is an arithmetic number, because the mean of its divisors is an integer number (85060416).

Almost surely, 2^998370663 is an apocalyptic number.

998370663 is a deficient number, since it is larger than the sum of its proper divisors (362595993).

998370663 is a wasteful number, since it uses less digits than its factorization.

998370663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7774.

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 998370663 is about 31597.0040193687. The cubic root of 998370663 is about 999.4565924284.

The spelling of 998370663 in words is "nine hundred ninety-eight million, three hundred seventy thousand, six hundred sixty-three".