665355413 has 16 divisors (see below), whose sum is σ = 687108096. Its totient is φ = 644071680.

The previous prime is 665355409. The next prime is 665355491. The reversal of 665355413 is 314553566.

It is a cyclic number.

It is not a de Polignac number, because 665355413 - 2² = 665355409 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 (665355013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1018595 + ... + 1019247.

It is an arithmetic number, because the mean of its divisors is an integer number (42944256).

Almost surely, 2^665355413 is an apocalyptic number.

It is an amenable number.

665355413 is a deficient number, since it is larger than the sum of its proper divisors (21752683).

665355413 is a wasteful number, since it uses less digits than its factorization.

665355413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

The product of its digits is 162000, while the sum is 38.

The square root of 665355413 is about 25794.4841584398. The cubic root of 665355413 is about 873.0073460261.

The spelling of 665355413 in words is "six hundred sixty-five million, three hundred fifty-five thousand, four hundred thirteen".