998674723503 has 6 divisors (see below), whose sum is σ = 1442530156184. Its totient is φ = 665783148996.

The previous prime is 998674723493. The next prime is 998674723537. The reversal of 998674723503 is 305327476899.

998674723503 is a `hidden beast` number, since 9 + 9 + 8 + 67 + 47 + 23 + 503 = 666.

It is not a de Polignac number, because 998674723503 - 2⁵ = 998674723471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998674723573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55481929075 + ... + 55481929092.

Almost surely, 2^998674723503 is an apocalyptic number.

998674723503 is a deficient number, since it is larger than the sum of its proper divisors (443855432681).

998674723503 is a wasteful number, since it uses less digits than its factorization.

998674723503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110963858173 (or 110963858170 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 63.

The spelling of 998674723503 in words is "nine hundred ninety-eight billion, six hundred seventy-four million, seven hundred twenty-three thousand, five hundred three".