998825515 has 8 divisors (see below), whose sum is σ = 1215472608. Its totient is φ = 787805760.

The previous prime is 998825501. The next prime is 998825521. The reversal of 998825515 is 515528899.

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

It is not a de Polignac number, because 998825515 - 2⁵ = 998825483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406442 + ... + 1407151.

It is an arithmetic number, because the mean of its divisors is an integer number (151934076).

Almost surely, 2^998825515 is an apocalyptic number.

998825515 is a deficient number, since it is larger than the sum of its proper divisors (216647093).

998825515 is a wasteful number, since it uses less digits than its factorization.

998825515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813669.

The product of its digits is 1296000, while the sum is 52.

The square root of 998825515 is about 31604.2009074743. The cubic root of 998825515 is about 999.6083516316.

The spelling of 998825515 in words is "nine hundred ninety-eight million, eight hundred twenty-five thousand, five hundred fifteen".