264000689 has 4 divisors (see below), whose sum is σ = 264436224. Its totient is φ = 263565156.

The previous prime is 264000683. The next prime is 264000697. The reversal of 264000689 is 986000462.

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 264000689 - 2¹⁶ = 263935153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264000683) 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, 216857 + ... + 218070.

It is an arithmetic number, because the mean of its divisors is an integer number (66109056).

Almost surely, 2^264000689 is an apocalyptic number.

It is an amenable number.

264000689 is a deficient number, since it is larger than the sum of its proper divisors (435535).

264000689 is an equidigital number, since it uses as much as digits as its factorization.

264000689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435534.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 264000689 is about 16248.0980117674. The cubic root of 264000689 is about 641.5074240773.

The spelling of 264000689 in words is "two hundred sixty-four million, six hundred eighty-nine", and thus it is an aban number.