3666013 has 4 divisors (see below), whose sum is σ = 3948028. Its totient is φ = 3384000.

The previous prime is 3666011. The next prime is 3666023. The reversal of 3666013 is 3106663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142884 + 3523129 = 378^2 + 1877^2 .

It is a cyclic number.

It is not a de Polignac number, because 3666013 - 2¹ = 3666011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140988 + ... + 141013.

It is an arithmetic number, because the mean of its divisors is an integer number (987007).

Almost surely, 2^3666013 is an apocalyptic number.

It is an amenable number.

3666013 is a deficient number, since it is larger than the sum of its proper divisors (282015).

3666013 is a wasteful number, since it uses less digits than its factorization.

3666013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282014.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 3666013 is about 1914.6835247633. The cubic root of 3666013 is about 154.1930030812.

It can be divided in two parts, 36 and 66013, that added together give a square (66049 = 257²).

The spelling of 3666013 in words is "three million, six hundred sixty-six thousand, thirteen".