998574396745 has 8 divisors (see below), whose sum is σ = 1198337756616. Its totient is φ = 798827197056.

The previous prime is 998574396713. The next prime is 998574396791. The reversal of 998574396745 is 547693475899.

It can be written as a sum of positive squares in 4 ways, for example, as 708849492624 + 289724904121 = 841932^2 + 538261^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 998574396745 - 2⁵ = 998574396713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3903682 + ... + 4151611.

It is an arithmetic number, because the mean of its divisors is an integer number (149792219577).

Almost surely, 2^998574396745 is an apocalyptic number.

It is an amenable number.

998574396745 is a deficient number, since it is larger than the sum of its proper divisors (199763359871).

998574396745 is a wasteful number, since it uses less digits than its factorization.

998574396745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080091.

The product of its digits is 2057529600, while the sum is 76.

The spelling of 998574396745 in words is "nine hundred ninety-eight billion, five hundred seventy-four million, three hundred ninety-six thousand, seven hundred forty-five".