663712 has 24 divisors (see below), whose sum is σ = 1493856. Its totient is φ = 284352.

The previous prime is 663709. The next prime is 663713. The reversal of 663712 is 217366.

It is not an unprimeable number, because it can be changed into a prime (663713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258 + ... + 1705.

It is an arithmetic number, because the mean of its divisors is an integer number (62244).

2⁶⁶³⁷¹² is an apocalyptic number.

It is an amenable number.

663712 is an abundant number, since it is smaller than the sum of its proper divisors (830144).

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

663712 is a wasteful number, since it uses less digits than its factorization.

663712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980 (or 2972 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 663712 is about 814.6852152826. The cubic root of 663712 is about 87.2287983887.

The spelling of 663712 in words is "six hundred sixty-three thousand, seven hundred twelve".