998328551 has 16 divisors (see below), whose sum is σ = 1114007040. Its totient is φ = 886865280.

The previous prime is 998328523. The next prime is 998328581. The reversal of 998328551 is 155823899.

998328551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 998328551 - 2²⁶ = 931219687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 998328551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998328581) 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, 467855 + ... + 469983.

It is an arithmetic number, because the mean of its divisors is an integer number (69625440).

Almost surely, 2^998328551 is an apocalyptic number.

998328551 is a deficient number, since it is larger than the sum of its proper divisors (115678489).

998328551 is a wasteful number, since it uses less digits than its factorization.

998328551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094.

The product of its digits is 777600, while the sum is 50.

The square root of 998328551 is about 31596.3376200470. The cubic root of 998328551 is about 999.4425396290.

The spelling of 998328551 in words is "nine hundred ninety-eight million, three hundred twenty-eight thousand, five hundred fifty-one".