656249 has 4 divisors (see below), whose sum is σ = 715920. Its totient is φ = 596580.

The previous prime is 656237. The next prime is 656263. The reversal of 656249 is 942656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 656249 - 2¹² = 652153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29819 + ... + 29840.

It is an arithmetic number, because the mean of its divisors is an integer number (178980).

2⁶⁵⁶²⁴⁹ is an apocalyptic number.

It is an amenable number.

656249 is a deficient number, since it is larger than the sum of its proper divisors (59671).

656249 is a wasteful number, since it uses less digits than its factorization.

656249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59670.

The product of its digits is 12960, while the sum is 32.

The square root of 656249 is about 810.0919700873. The cubic root of 656249 is about 86.9006219821.

The spelling of 656249 in words is "six hundred fifty-six thousand, two hundred forty-nine".