656248 has 8 divisors (see below), whose sum is σ = 1230480. Its totient is φ = 328120.

The previous prime is 656237. The next prime is 656263. The reversal of 656248 is 842656.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×656248² = 861322875008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41008 + ... + 41023.

It is an arithmetic number, because the mean of its divisors is an integer number (153810).

656248 is a Friedman number, since it can be written as 6-8+42*5^6, using all its digits and the basic arithmetic operations.

2⁶⁵⁶²⁴⁸ is an apocalyptic number.

It is an amenable number.

656248 is a deficient number, since it is larger than the sum of its proper divisors (574232).

656248 is a wasteful number, since it uses less digits than its factorization.

656248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82037 (or 82033 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 656248 is about 810.0913528732. The cubic root of 656248 is about 86.9005778420.

The spelling of 656248 in words is "six hundred fifty-six thousand, two hundred forty-eight".