3666501 has 12 divisors (see below), whose sum is σ = 5317312. Its totient is φ = 2434536.

The previous prime is 3666493. The next prime is 3666521. The reversal of 3666501 is 1056663.

It is not a de Polignac number, because 3666501 - 2³ = 3666493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666521) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2100 + ... + 3426.

Almost surely, 2^3666501 is an apocalyptic number.

It is an amenable number.

3666501 is a deficient number, since it is larger than the sum of its proper divisors (1650811).

3666501 is a wasteful number, since it uses less digits than its factorization.

3666501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1637 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3666501 is about 1914.8109567265. The cubic root of 3666501 is about 154.1998445597.

The spelling of 3666501 in words is "three million, six hundred sixty-six thousand, five hundred one".