998763265 has 4 divisors (see below), whose sum is σ = 1198515924. Its totient is φ = 799010608.

The previous prime is 998763223. The next prime is 998763287. The reversal of 998763265 is 562367899.

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 281434176 + 717329089 = 16776^2 + 26783^2 .

It is a cyclic number.

It is not a de Polignac number, because 998763265 - 2⁹ = 998762753 is a prime.

It is a super-3 number, since 3×998763265³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99876322 + ... + 99876331.

It is an arithmetic number, because the mean of its divisors is an integer number (299628981).

Almost surely, 2^998763265 is an apocalyptic number.

It is an amenable number.

998763265 is a deficient number, since it is larger than the sum of its proper divisors (199752659).

998763265 is a wasteful number, since it uses less digits than its factorization.

998763265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199752658.

The product of its digits is 4898880, while the sum is 55.

The square root of 998763265 is about 31603.2160546992. The cubic root of 998763265 is about 999.5875849372.

The spelling of 998763265 in words is "nine hundred ninety-eight million, seven hundred sixty-three thousand, two hundred sixty-five".