604656 has 120 divisors (see below), whose sum is σ = 2031120. Its totient is φ = 165888.

The previous prime is 604651. The next prime is 604661. The reversal of 604656 is 656406.

604656 is a `hidden beast` number, since 6 + 0 + 4 + 656 = 666.

604656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (604651) and next prime (604661).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31815 + ... + 31833.

It is an arithmetic number, because the mean of its divisors is an integer number (16926).

2⁶⁰⁴⁶⁵⁶ is an apocalyptic number.

604656 is the 416-th nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 604656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1015560).

604656 is an abundant number, since it is smaller than the sum of its proper divisors (1426464).

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

604656 is a wasteful number, since it uses less digits than its factorization.

604656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 604656 is about 777.5962962875. The cubic root of 604656 is about 84.5608725390.

The spelling of 604656 in words is "six hundred four thousand, six hundred fifty-six".