264945641 has 4 divisors (see below), whose sum is σ = 272106372. Its totient is φ = 257784912.

The previous prime is 264945617. The next prime is 264945643. The reversal of 264945641 is 146549462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158030041 + 106915600 = 12571^2 + 10340^2 .

It is a cyclic number.

It is not a de Polignac number, because 264945641 - 2¹⁴ = 264929257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264945643) 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, 3580310 + ... + 3580383.

It is an arithmetic number, because the mean of its divisors is an integer number (68026593).

Almost surely, 2^264945641 is an apocalyptic number.

It is an amenable number.

264945641 is a deficient number, since it is larger than the sum of its proper divisors (7160731).

264945641 is an equidigital number, since it uses as much as digits as its factorization.

264945641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160730.

The product of its digits is 207360, while the sum is 41.

The square root of 264945641 is about 16277.1508870564. The cubic root of 264945641 is about 642.2719068011.

The spelling of 264945641 in words is "two hundred sixty-four million, nine hundred forty-five thousand, six hundred forty-one".