664248 has 32 divisors (see below), whose sum is σ = 1789200. Its totient is φ = 204288.

The previous prime is 664243. The next prime is 664253. The reversal of 664248 is 842466.

It is an interprime number because it is at equal distance from previous prime (664243) and next prime (664253).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664243) by changing a digit.

664248 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753 + ... + 1376.

2⁶⁶⁴²⁴⁸ is an apocalyptic number.

It is an amenable number.

664248 is an abundant number, since it is smaller than the sum of its proper divisors (1124952).

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

664248 is a wasteful number, since it uses less digits than its factorization.

664248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151 (or 2147 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 664248 is about 815.0141103073. The cubic root of 664248 is about 87.2522734579.

The spelling of 664248 in words is "six hundred sixty-four thousand, two hundred forty-eight".