3647066 has 4 divisors (see below), whose sum is σ = 5470602. Its totient is φ = 1823532.

The previous prime is 3647029. The next prime is 3647071. The reversal of 3647066 is 6607463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6607463 = 23 ⋅287281.

It can be written as a sum of positive squares in only one way, i.e., 3367225 + 279841 = 1835^2 + 529^2 .

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 as a sum of consecutive naturals, namely, 911765 + ... + 911768.

Almost surely, 2^3647066 is an apocalyptic number.

3647066 is a deficient number, since it is larger than the sum of its proper divisors (1823536).

3647066 is a wasteful number, since it uses less digits than its factorization.

3647066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823535.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 3647066 is about 1909.7293001889. The cubic root of 3647066 is about 153.9269063371.

The spelling of 3647066 in words is "three million, six hundred forty-seven thousand, sixty-six".