646248 has 16 divisors (see below), whose sum is σ = 1615680. Its totient is φ = 215408.

The previous prime is 646237. The next prime is 646253. The reversal of 646248 is 842646.

646248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a nialpdrome in base 15.

It is an unprimeable number.

646248 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 3 ways as a sum of consecutive naturals, for example, 13440 + ... + 13487.

It is an arithmetic number, because the mean of its divisors is an integer number (100980).

2⁶⁴⁶²⁴⁸ is an apocalyptic number.

It is an amenable number.

646248 is an abundant number, since it is smaller than the sum of its proper divisors (969432).

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

646248 is a wasteful number, since it uses less digits than its factorization.

646248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26936 (or 26932 counting only the distinct ones).

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

The square root of 646248 is about 803.8955155989. The cubic root of 646248 is about 86.4569155168.

The spelling of 646248 in words is "six hundred forty-six thousand, two hundred forty-eight".