656446 has 8 divisors (see below), whose sum is σ = 1125360. Its totient is φ = 281328.

The previous prime is 656429. The next prime is 656459. The reversal of 656446 is 644656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

656446 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, 23431 + ... + 23458.

It is an arithmetic number, because the mean of its divisors is an integer number (140670).

2⁶⁵⁶⁴⁴⁶ is an apocalyptic number.

656446 is a deficient number, since it is larger than the sum of its proper divisors (468914).

656446 is a wasteful number, since it uses less digits than its factorization.

656446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46898.

The product of its digits is 17280, while the sum is 31.

The square root of 656446 is about 810.2135520960. The cubic root of 656446 is about 86.9093167051.

The spelling of 656446 in words is "six hundred fifty-six thousand, four hundred forty-six".