264220613 has 8 divisors (see below), whose sum is σ = 280289880. Its totient is φ = 248209920.

The previous prime is 264220601. The next prime is 264220633. The reversal of 264220613 is 316022462.

It can be written as a sum of positive squares in 4 ways, for example, as 44528929 + 219691684 = 6673^2 + 14822^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 264220613 - 2¹⁰ = 264219589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264220633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5168 + ... + 23561.

It is an arithmetic number, because the mean of its divisors is an integer number (35036235).

Almost surely, 2^264220613 is an apocalyptic number.

It is an amenable number.

264220613 is a deficient number, since it is larger than the sum of its proper divisors (16069267).

264220613 is a wasteful number, since it uses less digits than its factorization.

264220613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29287.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 264220613 is about 16254.8642873449. The cubic root of 264220613 is about 641.6855091185.

The spelling of 264220613 in words is "two hundred sixty-four million, two hundred twenty thousand, six hundred thirteen".