663460378 has 16 divisors (see below), whose sum is σ = 1138320000. Its totient is φ = 284100336.

The previous prime is 663460349. The next prime is 663460397. The reversal of 663460378 is 873064366.

663460378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2253 + ... + 36496.

It is an arithmetic number, because the mean of its divisors is an integer number (71145000).

Almost surely, 2^663460378 is an apocalyptic number.

663460378 is a deficient number, since it is larger than the sum of its proper divisors (474859622).

663460378 is a wasteful number, since it uses less digits than its factorization.

663460378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39981.

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 663460378 is about 25757.7246277694. The cubic root of 663460378 is about 872.1777379819.

It can be divided in two parts, 663 and 460378, that added together give a square (461041 = 679²).

The spelling of 663460378 in words is "six hundred sixty-three million, four hundred sixty thousand, three hundred seventy-eight".