264649 has 12 divisors (see below), whose sum is σ = 336528. Its totient is φ = 205800.

The previous prime is 264643. The next prime is 264659. The reversal of 264649 is 946462.

It is not a de Polignac number, because 264649 - 2⁹ = 264137 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 6³ + 6³ + 4² + 4⁹ + 9 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264649.

It is not an unprimeable number, because it can be changed into a prime (264643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294 + ... + 784.

It is an arithmetic number, because the mean of its divisors is an integer number (28044).

2²⁶⁴⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

264649 is a deficient number, since it is larger than the sum of its proper divisors (71879).

264649 is a wasteful number, since it uses less digits than its factorization.

264649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 509 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 264649 is about 514.4404727468. The cubic root of 264649 is about 64.2032115059.

The spelling of 264649 in words is "two hundred sixty-four thousand, six hundred forty-nine".