663103155 has 64 divisors (see below), whose sum is σ = 1259693568. Its totient is φ = 293621760.

The previous prime is 663103121. The next prime is 663103187. The reversal of 663103155 is 551301366.

663103155 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 663103155 - 2⁷ = 663103027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 206472 + ... + 209658.

It is an arithmetic number, because the mean of its divisors is an integer number (19682712).

Almost surely, 2^663103155 is an apocalyptic number.

663103155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

663103155 is a deficient number, since it is larger than the sum of its proper divisors (596590413).

663103155 is a wasteful number, since it uses less digits than its factorization.

663103155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 663103155 is about 25750.7894053755. The cubic root of 663103155 is about 872.0211760667.

The spelling of 663103155 in words is "six hundred sixty-three million, one hundred three thousand, one hundred fifty-five".