3668739 has 4 divisors (see below), whose sum is σ = 4891656. Its totient is φ = 2445824.

The previous prime is 3668701. The next prime is 3668741. The reversal of 3668739 is 9378663.

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

It is a cyclic number.

It is not a de Polignac number, because 3668739 - 2⁷ = 3668611 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 3668739.

It is not an unprimeable number, because it can be changed into a prime (3668759) 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, 611454 + ... + 611459.

It is an arithmetic number, because the mean of its divisors is an integer number (1222914).

Almost surely, 2^3668739 is an apocalyptic number.

3668739 is a deficient number, since it is larger than the sum of its proper divisors (1222917).

3668739 is a wasteful number, since it uses less digits than its factorization.

3668739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222916.

The product of its digits is 163296, while the sum is 42.

The square root of 3668739 is about 1915.3952594700. The cubic root of 3668739 is about 154.2312122552.

The spelling of 3668739 in words is "three million, six hundred sixty-eight thousand, seven hundred thirty-nine".