665023457363 has 4 divisors (see below), whose sum is σ = 671479995888. Its totient is φ = 658566918840.

The previous prime is 665023457339. The next prime is 665023457387. The reversal of 665023457363 is 363754320566.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (665023457339) and next prime (665023457387).

It is a cyclic number.

It is not a de Polignac number, because 665023457363 - 2¹⁴ = 665023440979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665023457323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3228269108 + ... + 3228269313.

It is an arithmetic number, because the mean of its divisors is an integer number (167869998972).

Almost surely, 2^665023457363 is an apocalyptic number.

665023457363 is a deficient number, since it is larger than the sum of its proper divisors (6456538525).

665023457363 is a wasteful number, since it uses less digits than its factorization.

665023457363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6456538524.

The product of its (nonzero) digits is 8164800, while the sum is 50.

The spelling of 665023457363 in words is "six hundred sixty-five billion, twenty-three million, four hundred fifty-seven thousand, three hundred sixty-three".