266460641 has 4 divisors (see below), whose sum is σ = 266530500. Its totient is φ = 266390784.

The previous prime is 266460629. The next prime is 266460647. The reversal of 266460641 is 146064662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146064662 = 2 ⋅73032331.

It can be written as a sum of positive squares in 2 ways, for example, as 172370641 + 94090000 = 13129^2 + 9700^2 .

It is a cyclic number.

It is not a de Polignac number, because 266460641 - 2⁶ = 266460577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266460647) 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, 28856 + ... + 36953.

It is an arithmetic number, because the mean of its divisors is an integer number (66632625).

Almost surely, 2^266460641 is an apocalyptic number.

It is an amenable number.

266460641 is a deficient number, since it is larger than the sum of its proper divisors (69859).

266460641 is an equidigital number, since it uses as much as digits as its factorization.

266460641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69858.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 266460641 is about 16323.6221776908. The cubic root of 266460641 is about 643.4937840344.

The spelling of 266460641 in words is "two hundred sixty-six million, four hundred sixty thousand, six hundred forty-one".