663648126 has 16 divisors (see below), whose sum is σ = 1327920528. Its totient is φ = 221112000.

The previous prime is 663648113. The next prime is 663648127. The reversal of 663648126 is 621846366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663648127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11575 + ... + 38226.

It is an arithmetic number, because the mean of its divisors is an integer number (82995033).

Almost surely, 2^663648126 is an apocalyptic number.

663648126 is an abundant number, since it is smaller than the sum of its proper divisors (664272402).

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

663648126 is a wasteful number, since it uses less digits than its factorization.

663648126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52027.

The product of its digits is 248832, while the sum is 42.

The square root of 663648126 is about 25761.3688689091. The cubic root of 663648126 is about 872.2600007101.

The spelling of 663648126 in words is "six hundred sixty-three million, six hundred forty-eight thousand, one hundred twenty-six".