663260366 has 8 divisors (see below), whose sum is σ = 1000994664. Its totient is φ = 329595480.

The previous prime is 663260333. The next prime is 663260369. The reversal of 663260366 is 663062366.

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

It is a super-3 number, since 3×663260366³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663260369) 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, 1016945 + ... + 1017596.

It is an arithmetic number, because the mean of its divisors is an integer number (125124333).

Almost surely, 2^663260366 is an apocalyptic number.

663260366 is a deficient number, since it is larger than the sum of its proper divisors (337734298).

663260366 is a wasteful number, since it uses less digits than its factorization.

663260366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034706.

The product of its (nonzero) digits is 139968, while the sum is 38.

The square root of 663260366 is about 25753.8417716658. The cubic root of 663260366 is about 872.0900846457.

The spelling of 663260366 in words is "six hundred sixty-three million, two hundred sixty thousand, three hundred sixty-six".