998265505 has 8 divisors (see below), whose sum is σ = 1199283624. Its totient is φ = 797702400.

The previous prime is 998265497. The next prime is 998265539. The reversal of 998265505 is 505562899.

It can be written as a sum of positive squares in 4 ways, for example, as 463761 + 997801744 = 681^2 + 31588^2 .

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

It is not a de Polignac number, because 998265505 - 2³ = 998265497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108906 + ... + 117715.

It is an arithmetic number, because the mean of its divisors is an integer number (149910453).

Almost surely, 2^998265505 is an apocalyptic number.

It is an amenable number.

998265505 is a deficient number, since it is larger than the sum of its proper divisors (201018119).

998265505 is a wasteful number, since it uses less digits than its factorization.

998265505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227507.

The product of its (nonzero) digits is 972000, while the sum is 49.

The square root of 998265505 is about 31595.3399253751. The cubic root of 998265505 is about 999.4215004027.

The spelling of 998265505 in words is "nine hundred ninety-eight million, two hundred sixty-five thousand, five hundred five".