3666664 has 8 divisors (see below), whose sum is σ = 6875010. Its totient is φ = 1833328.

The previous prime is 3666661. The next prime is 3666703. The reversal of 3666664 is 4666663.

It can be written as a sum of positive squares in only one way, i.e., 1844164 + 1822500 = 1358^2 + 1350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3666661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229159 + ... + 229174.

Almost surely, 2^3666664 is an apocalyptic number.

It is an amenable number.

3666664 is a deficient number, since it is larger than the sum of its proper divisors (3208346).

3666664 is a wasteful number, since it uses less digits than its factorization.

3666664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458339 (or 458335 counting only the distinct ones).

The product of its digits is 93312, while the sum is 37.

The square root of 3666664 is about 1914.8535192019. The cubic root of 3666664 is about 154.2021295904.

Subtracting 3666664 from its reverse (4666663), we obtain a palindrome (999999).

The spelling of 3666664 in words is "three million, six hundred sixty-six thousand, six hundred sixty-four".