663704145 has 32 divisors (see below), whose sum is σ = 1270684800. Its totient is φ = 326745792.

The previous prime is 663704137. The next prime is 663704177. The reversal of 663704145 is 541407366.

It is a happy number.

663704145 is a `hidden beast` number, since 6 + 637 + 0 + 4 + 14 + 5 = 666.

663704145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663704145 - 2³ = 663704137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187335 + ... + 190844.

It is an arithmetic number, because the mean of its divisors is an integer number (39708900).

Almost surely, 2^663704145 is an apocalyptic number.

663704145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

663704145 is a deficient number, since it is larger than the sum of its proper divisors (606980655).

663704145 is a wasteful number, since it uses less digits than its factorization.

663704145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378206 (or 378200 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 663704145 is about 25762.4561134997. The cubic root of 663704145 is about 872.2845427107.

The spelling of 663704145 in words is "six hundred sixty-three million, seven hundred four thousand, one hundred forty-five".