265243998 has 16 divisors (see below), whose sum is σ = 547600896. Its totient is φ = 85562520.

The previous prime is 265243963. The next prime is 265244011. The reversal of 265243998 is 899342562.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712836 + ... + 713207.

It is an arithmetic number, because the mean of its divisors is an integer number (34225056).

Almost surely, 2^265243998 is an apocalyptic number.

265243998 is an abundant number, since it is smaller than the sum of its proper divisors (282356898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265243998 is a wasteful number, since it uses less digits than its factorization.

265243998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426079.

The product of its digits is 933120, while the sum is 48.

The square root of 265243998 is about 16286.3132107914. The cubic root of 265243998 is about 642.5129052100.

The spelling of 265243998 in words is "two hundred sixty-five million, two hundred forty-three thousand, nine hundred ninety-eight".