3506816 has 16 divisors (see below), whose sum is σ = 6986490. Its totient is φ = 1753344.

The previous prime is 3506809. The next prime is 3506819. The reversal of 3506816 is 6186053.

It can be written as a sum of positive squares in only one way, i.e., 2689600 + 817216 = 1640^2 + 904^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (3506819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13571 + ... + 13826.

Almost surely, 2^3506816 is an apocalyptic number.

It is an amenable number.

3506816 is a deficient number, since it is larger than the sum of its proper divisors (3479674).

3506816 is an equidigital number, since it uses as much as digits as its factorization.

3506816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27411 (or 27399 counting only the distinct ones).

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

The square root of 3506816 is about 1872.6494599898. The cubic root of 3506816 is about 151.9279436861.

The spelling of 3506816 in words is "three million, five hundred six thousand, eight hundred sixteen".