264641 has 4 divisors (see below), whose sum is σ = 285012. Its totient is φ = 244272.

The previous prime is 264637. The next prime is 264643. The reversal of 264641 is 146462.

It is a happy number.

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 92416 + 172225 = 304^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 264641 - 2² = 264637 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 6³ + 6³ + 4² + 4⁹ + 1 .

It is not an unprimeable number, because it can be changed into a prime (264643) 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, 10166 + ... + 10191.

It is an arithmetic number, because the mean of its divisors is an integer number (71253).

2²⁶⁴⁶⁴¹ is an apocalyptic number.

It is an amenable number.

264641 is a deficient number, since it is larger than the sum of its proper divisors (20371).

264641 is a wasteful number, since it uses less digits than its factorization.

264641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20370.

The product of its digits is 1152, while the sum is 23.

The square root of 264641 is about 514.4326972501. The cubic root of 264641 is about 64.2025645725.

The spelling of 264641 in words is "two hundred sixty-four thousand, six hundred forty-one".