664067413 has 4 divisors (see below), whose sum is σ = 703130220. Its totient is φ = 625004608.

The previous prime is 664067401. The next prime is 664067441. The reversal of 664067413 is 314760466.

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 624150289 + 39917124 = 24983^2 + 6318^2 .

It is a cyclic number.

It is not a de Polignac number, because 664067413 - 2²⁹ = 127196501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664067113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19531378 + ... + 19531411.

It is an arithmetic number, because the mean of its divisors is an integer number (175782555).

Almost surely, 2^664067413 is an apocalyptic number.

It is an amenable number.

664067413 is a deficient number, since it is larger than the sum of its proper divisors (39062807).

664067413 is a wasteful number, since it uses less digits than its factorization.

664067413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39062806.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 664067413 is about 25769.5054861361. The cubic root of 664067413 is about 872.4436574154.

The spelling of 664067413 in words is "six hundred sixty-four million, sixty-seven thousand, four hundred thirteen".