998607790 has 32 divisors (see below), whose sum is σ = 1880283456. Its totient is φ = 381131520.

The previous prime is 998607769. The next prime is 998607793. The reversal of 998607790 is 97706899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998607793) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 91674 + ... + 101986.

It is an arithmetic number, because the mean of its divisors is an integer number (58758858).

Almost surely, 2^998607790 is an apocalyptic number.

998607790 is a deficient number, since it is larger than the sum of its proper divisors (881675666).

998607790 is a wasteful number, since it uses less digits than its factorization.

998607790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10764.

The product of its (nonzero) digits is 1714608, while the sum is 55.

The square root of 998607790 is about 31600.7561618389. The cubic root of 998607790 is about 999.5357144723.

The spelling of 998607790 in words is "nine hundred ninety-eight million, six hundred seven thousand, seven hundred ninety".