663617148 has 12 divisors (see below), whose sum is σ = 1548440040. Its totient is φ = 221205712.

The previous prime is 663617147. The next prime is 663617153. The reversal of 663617148 is 841716366.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663617147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27650703 + ... + 27650726.

It is an arithmetic number, because the mean of its divisors is an integer number (129036670).

Almost surely, 2^663617148 is an apocalyptic number.

It is an amenable number.

663617148 is an abundant number, since it is smaller than the sum of its proper divisors (884822892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663617148 is a wasteful number, since it uses less digits than its factorization.

663617148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55301436 (or 55301434 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 663617148 is about 25760.7676127867. The cubic root of 663617148 is about 872.2464286128.

The spelling of 663617148 in words is "six hundred sixty-three million, six hundred seventeen thousand, one hundred forty-eight".