656012 has 18 divisors (see below), whose sum is σ = 1335852. Its totient is φ = 281064.

The previous prime is 655987. The next prime is 656023. The reversal of 656012 is 210656.

It is a plaindrome in base 12.

It is an unprimeable number.

656012 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 5 ways as a sum of consecutive naturals, for example, 1478 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (74214).

2⁶⁵⁶⁰¹² is an apocalyptic number.

It is an amenable number.

656012 is an abundant number, since it is smaller than the sum of its proper divisors (679840).

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

656012 is a wasteful number, since it uses less digits than its factorization.

656012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365 (or 3356 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 656012 is about 809.9456771908. The cubic root of 656012 is about 86.8901595270.

Adding to 656012 its reverse (210656), we get a palindrome (866668).

The spelling of 656012 in words is "six hundred fifty-six thousand, twelve".