998596741 has 4 divisors (see below), whose sum is σ = 998733484. Its totient is φ = 998460000.

The previous prime is 998596717. The next prime is 998596751. The reversal of 998596741 is 147695899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 294808900 + 703787841 = 17170^2 + 26529^2 .

It is a 4-Lehmer number, since φ(998596741) divides (998596741-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 998596741 - 2⁹ = 998596229 is a prime.

It is a super-2 number, since 2×998596741² = 1994390902271642162, which contains 22 as substring.

It is a deceptive number, since it divides R_998596740.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998596751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56760 + ... + 72241.

It is an arithmetic number, because the mean of its divisors is an integer number (249683371).

It is a Poulet number, since it divides 2^998596740-1.

Almost surely, 2^998596741 is an apocalyptic number.

It is an amenable number.

998596741 is a deficient number, since it is larger than the sum of its proper divisors (136743).

998596741 is a wasteful number, since it uses less digits than its factorization.

998596741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136742.

The product of its digits is 4898880, while the sum is 58.

The square root of 998596741 is about 31600.5813395893. The cubic root of 998596741 is about 999.5320280364.

The spelling of 998596741 in words is "nine hundred ninety-eight million, five hundred ninety-six thousand, seven hundred forty-one".