265990769 has 4 divisors (see below), whose sum is σ = 290171760. Its totient is φ = 241809780.

The previous prime is 265990759. The next prime is 265990771. The reversal of 265990769 is 967099562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 265990769 - 2⁸ = 265990513 is a prime.

It is a super-2 number, since 2×265990769² = 141502178386422722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 265990769.

It is not an unprimeable number, because it can be changed into a prime (265990759) 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 3 ways as a sum of consecutive naturals, for example, 12090479 + ... + 12090500.

It is an arithmetic number, because the mean of its divisors is an integer number (72542940).

Almost surely, 2^265990769 is an apocalyptic number.

It is an amenable number.

265990769 is a deficient number, since it is larger than the sum of its proper divisors (24180991).

265990769 is a wasteful number, since it uses less digits than its factorization.

265990769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24180990.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 265990769 is about 16309.2234333827. The cubic root of 265990769 is about 643.1153196206.

The spelling of 265990769 in words is "two hundred sixty-five million, nine hundred ninety thousand, seven hundred sixty-nine".