3668913 has 6 divisors (see below), whose sum is σ = 5299554. Its totient is φ = 2445936.

The previous prime is 3668911. The next prime is 3668921. The reversal of 3668913 is 3198663.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3196944 + 471969 = 1788^2 + 687^2 .

It is not a de Polignac number, because 3668913 - 2¹ = 3668911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3668911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203820 + ... + 203837.

It is an arithmetic number, because the mean of its divisors is an integer number (883259).

Almost surely, 2^3668913 is an apocalyptic number.

It is an amenable number.

3668913 is a deficient number, since it is larger than the sum of its proper divisors (1630641).

3668913 is a wasteful number, since it uses less digits than its factorization.

3668913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407663 (or 407660 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3668913 is about 1915.4406803657. The cubic root of 3668913 is about 154.2336504959.

The spelling of 3668913 in words is "three million, six hundred sixty-eight thousand, nine hundred thirteen".