616385 has 16 divisors (see below), whose sum is σ = 922752. Its totient is φ = 384000.

The previous prime is 616367. The next prime is 616387. The reversal of 616385 is 583616.

616385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 616385 - 2⁶ = 616321 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (616387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416 + ... + 1185.

It is an arithmetic number, because the mean of its divisors is an integer number (57672).

2⁶¹⁶³⁸⁵ is an apocalyptic number.

It is an amenable number.

616385 is a deficient number, since it is larger than the sum of its proper divisors (306367).

616385 is a wasteful number, since it uses less digits than its factorization.

616385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624.

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

The square root of 616385 is about 785.1019042137. The cubic root of 616385 is about 85.1041399475.

It can be divided in two parts, 616 and 385, that added together give a palindrome (1001).

The spelling of 616385 in words is "six hundred sixteen thousand, three hundred eighty-five".