613856 has 12 divisors (see below), whose sum is σ = 1208592. Its totient is φ = 306912.

The previous prime is 613849. The next prime is 613861. The reversal of 613856 is 658316.

613856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

613856 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 as a sum of consecutive naturals, namely, 9560 + ... + 9623.

It is an arithmetic number, because the mean of its divisors is an integer number (100716).

2⁶¹³⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

613856 is a deficient number, since it is larger than the sum of its proper divisors (594736).

613856 is a wasteful number, since it uses less digits than its factorization.

613856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19193 (or 19185 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 613856 is about 783.4896297974. The cubic root of 613856 is about 84.9875875762.

The spelling of 613856 in words is "six hundred thirteen thousand, eight hundred fifty-six".