265066493 has 4 divisors (see below), whose sum is σ = 265340448. Its totient is φ = 264792540.

The previous prime is 265066489. The next prime is 265066507. The reversal of 265066493 is 394660562.

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 265066493 - 2² = 265066489 is a prime.

It is a super-2 number, since 2×265066493² = 140520491422638098, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 265066493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265066433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135521 + ... + 137462.

It is an arithmetic number, because the mean of its divisors is an integer number (66335112).

Almost surely, 2^265066493 is an apocalyptic number.

It is an amenable number.

265066493 is a deficient number, since it is larger than the sum of its proper divisors (273955).

265066493 is an equidigital number, since it uses as much as digits as its factorization.

265066493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273954.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 265066493 is about 16280.8627842630. The cubic root of 265066493 is about 642.3695470131.

The spelling of 265066493 in words is "two hundred sixty-five million, sixty-six thousand, four hundred ninety-three".