4161616 has 20 divisors (see below), whose sum is σ = 8342100. Its totient is φ = 2008832.

The previous prime is 4161611. The next prime is 4161629. The reversal of 4161616 is 6161614.

It can be written as a sum of positive squares in 2 ways, for example, as 2190400 + 1971216 = 1480^2 + 1404^2 .

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

4161616 is a modest number, since divided by 1616 gives 416 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4021 + ... + 4948.

It is an arithmetic number, because the mean of its divisors is an integer number (417105).

Almost surely, 2^4161616 is an apocalyptic number.

It is an amenable number.

4161616 is an abundant number, since it is smaller than the sum of its proper divisors (4180484).

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

4161616 is a wasteful number, since it uses less digits than its factorization.

4161616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9006 (or 9000 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 4161616 is about 2040.0039215649. The cubic root of 4161616 is about 160.8498529451.

It can be divided in two parts, 41616 and 16, that multiplied together give a square (665856 = 816²).

The spelling of 4161616 in words is "four million, one hundred sixty-one thousand, six hundred sixteen".