265877641 has 4 divisors (see below), whose sum is σ = 269846032. Its totient is φ = 261909252.

The previous prime is 265877639. The next prime is 265877663. The reversal of 265877641 is 146778562.

It is a happy number.

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 265877641 - 2¹ = 265877639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265877591 and 265877600.

It is not an unprimeable number, because it can be changed into a prime (265877141) 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, 1984095 + ... + 1984228.

It is an arithmetic number, because the mean of its divisors is an integer number (67461508).

Almost surely, 2^265877641 is an apocalyptic number.

It is an amenable number.

265877641 is a deficient number, since it is larger than the sum of its proper divisors (3968391).

265877641 is an equidigital number, since it uses as much as digits as its factorization.

265877641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968390.

The product of its digits is 564480, while the sum is 46.

The square root of 265877641 is about 16305.7548429994. The cubic root of 265877641 is about 643.0241326633.

The spelling of 265877641 in words is "two hundred sixty-five million, eight hundred seventy-seven thousand, six hundred forty-one".