663703345 has 16 divisors (see below), whose sum is σ = 846210240. Its totient is φ = 498308544.

The previous prime is 663703343. The next prime is 663703393. The reversal of 663703345 is 543307366.

It is a cyclic number.

It is not a de Polignac number, because 663703345 - 2¹ = 663703343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663703343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22482 + ... + 42811.

It is an arithmetic number, because the mean of its divisors is an integer number (52888140).

Almost surely, 2^663703345 is an apocalyptic number.

It is an amenable number.

663703345 is a deficient number, since it is larger than the sum of its proper divisors (182506895).

663703345 is a wasteful number, since it uses less digits than its factorization.

663703345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65424.

The product of its (nonzero) digits is 136080, while the sum is 37.

The square root of 663703345 is about 25762.4405870251. The cubic root of 663703345 is about 872.2841922394.

The spelling of 663703345 in words is "six hundred sixty-three million, seven hundred three thousand, three hundred forty-five".