665035253 has 4 divisors (see below), whose sum is σ = 665129088. Its totient is φ = 664941420.

The previous prime is 665035243. The next prime is 665035277. The reversal of 665035253 is 352530566.

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, and also an emirpimes, since its reverse is a distinct semiprime: 352530566 = 2 ⋅176265283.

It is a cyclic number.

It is not a de Polignac number, because 665035253 - 2¹⁶ = 664969717 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 (665035243) 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, 35333 + ... + 50778.

It is an arithmetic number, because the mean of its divisors is an integer number (166282272).

Almost surely, 2^665035253 is an apocalyptic number.

It is an amenable number.

665035253 is a deficient number, since it is larger than the sum of its proper divisors (93835).

665035253 is an equidigital number, since it uses as much as digits as its factorization.

665035253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93834.

The product of its (nonzero) digits is 81000, while the sum is 35.

The square root of 665035253 is about 25788.2774337488. The cubic root of 665035253 is about 872.8672971293.

The spelling of 665035253 in words is "six hundred sixty-five million, thirty-five thousand, two hundred fifty-three".