265790997 has 24 divisors (see below), whose sum is σ = 399881600. Its totient is φ = 174455424.

The previous prime is 265790989. The next prime is 265791007. The reversal of 265790997 is 799097562.

It is not a de Polignac number, because 265790997 - 2³ = 265790989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265790927) 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 23 ways as a sum of consecutive naturals, for example, 752773 + ... + 753125.

Almost surely, 2^265790997 is an apocalyptic number.

265790997 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

265790997 is a deficient number, since it is larger than the sum of its proper divisors (134090603).

265790997 is an frugal number, since it uses more digits than its factorization.

265790997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The square root of 265790997 is about 16303.0977731228. The cubic root of 265790997 is about 642.9542756721.

The spelling of 265790997 in words is "two hundred sixty-five million, seven hundred ninety thousand, nine hundred ninety-seven".