3656306 has 4 divisors (see below), whose sum is σ = 5484462. Its totient is φ = 1828152.

The previous prime is 3656281. The next prime is 3656321. The reversal of 3656306 is 6036563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6036563 = 13 ⋅464351.

It can be written as a sum of positive squares in only one way, i.e., 3222025 + 434281 = 1795^2 + 659^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 914075 + ... + 914078.

Almost surely, 2^3656306 is an apocalyptic number.

3656306 is a deficient number, since it is larger than the sum of its proper divisors (1828156).

3656306 is a wasteful number, since it uses less digits than its factorization.

3656306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828155.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 3656306 is about 1912.1469608793. The cubic root of 3656306 is about 154.0567902093.

The spelling of 3656306 in words is "three million, six hundred fifty-six thousand, three hundred six".