656472 has 32 divisors (see below), whose sum is σ = 1738800. Its totient is φ = 205824.

The previous prime is 656471. The next prime is 656479. The reversal of 656472 is 274656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397 + ... + 1212.

2⁶⁵⁶⁴⁷² is an apocalyptic number.

It is an amenable number.

656472 is an abundant number, since it is smaller than the sum of its proper divisors (1082328).

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

656472 is a wasteful number, since it uses less digits than its factorization.

656472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635 (or 1631 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 656472 is about 810.2295970896. The cubic root of 656472 is about 86.9104641020.

It can be divided in two parts, 656 and 472, that added together give a triangular number (1128 = T₄₇).

The spelling of 656472 in words is "six hundred fifty-six thousand, four hundred seventy-two".