663655070 has 32 divisors (see below), whose sum is σ = 1287625248. Its totient is φ = 244821888.

The previous prime is 663655067. The next prime is 663655081. The reversal of 663655070 is 70556366.

663655070 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246572 + ... + 249248.

It is an arithmetic number, because the mean of its divisors is an integer number (40238289).

Almost surely, 2^663655070 is an apocalyptic number.

663655070 is a deficient number, since it is larger than the sum of its proper divisors (623970178).

663655070 is a wasteful number, since it uses less digits than its factorization.

663655070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 663655070 is about 25761.5036440034. The cubic root of 663655070 is about 872.2630429610.

The spelling of 663655070 in words is "six hundred sixty-three million, six hundred fifty-five thousand, seventy".