666363 has 8 divisors (see below), whose sum is σ = 894976. Its totient is φ = 441000.

The previous prime is 666353. The next prime is 666403. The reversal of 666363 is 363666.

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

It is not a de Polignac number, because 666363 - 2¹² = 662267 is a prime.

It is a Duffinian number.

666363 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 666363.

It is not an unprimeable number, because it can be changed into a prime (666353) 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, 283 + ... + 1188.

It is an arithmetic number, because the mean of its divisors is an integer number (111872).

2⁶⁶⁶³⁶³ is an apocalyptic number.

666363 is a deficient number, since it is larger than the sum of its proper divisors (228613).

666363 is a wasteful number, since it uses less digits than its factorization.

666363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625.

The product of its digits is 11664, while the sum is 30.

The square root of 666363 is about 816.3106026507. The cubic root of 666363 is about 87.3447805958.

The spelling of 666363 in words is "six hundred sixty-six thousand, three hundred sixty-three".