3855616 has 18 divisors (see below), whose sum is σ = 7696682. Its totient is φ = 1927680.

The previous prime is 3855581. The next prime is 3855623. The reversal of 3855616 is 6165583.

It can be written as a sum of positive squares in only one way, i.e., 3625216 + 230400 = 1904^2 + 480^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7275 + ... + 7786.

Almost surely, 2^3855616 is an apocalyptic number.

It is an amenable number.

3855616 is a deficient number, since it is larger than the sum of its proper divisors (3841066).

3855616 is an equidigital number, since it uses as much as digits as its factorization.

3855616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15077 (or 15063 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 3855616 is about 1963.5722548457. The cubic root of 3855616 is about 156.8066913707.

It can be divided in two parts, 385 and 5616, that multiplied together give a triangular number (2162160 = T₂₀₇₉).

The spelling of 3855616 in words is "three million, eight hundred fifty-five thousand, six hundred sixteen".