3648866 has 16 divisors (see below), whose sum is σ = 6055224. Its totient is φ = 1638144.

The previous prime is 3648859. The next prime is 3648899. The reversal of 3648866 is 6688463.

It can be written as a sum of positive squares in 4 ways, for example, as 2706025 + 942841 = 1645^2 + 971^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 935 + ... + 2858.

Almost surely, 2^3648866 is an apocalyptic number.

3648866 is a deficient number, since it is larger than the sum of its proper divisors (2406358).

3648866 is a wasteful number, since it uses less digits than its factorization.

3648866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845.

The product of its digits is 165888, while the sum is 41.

The square root of 3648866 is about 1910.2005130352. The cubic root of 3648866 is about 153.9522255811.

The spelling of 3648866 in words is "three million, six hundred forty-eight thousand, eight hundred sixty-six".