3665547 has 16 divisors (see below), whose sum is σ = 5460000. Its totient is φ = 2430432.

The previous prime is 3665539. The next prime is 3665573. The reversal of 3665547 is 7455663.

It is not a de Polignac number, because 3665547 - 2³ = 3665539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3665507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9229 + ... + 9617.

It is an arithmetic number, because the mean of its divisors is an integer number (341250).

Almost surely, 2^3665547 is an apocalyptic number.

3665547 is a deficient number, since it is larger than the sum of its proper divisors (1794453).

3665547 is a wasteful number, since it uses less digits than its factorization.

3665547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 741 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 3665547 is about 1914.5618297668. The cubic root of 3665547 is about 154.1864694634.

The spelling of 3665547 in words is "three million, six hundred sixty-five thousand, five hundred forty-seven".