3668278 has 4 divisors (see below), whose sum is σ = 5502420. Its totient is φ = 1834138.

The previous prime is 3668263. The next prime is 3668279. The reversal of 3668278 is 8728663.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3668278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3668279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 917068 + ... + 917071.

It is an arithmetic number, because the mean of its divisors is an integer number (1375605).

Almost surely, 2^3668278 is an apocalyptic number.

3668278 is a deficient number, since it is larger than the sum of its proper divisors (1834142).

3668278 is a wasteful number, since it uses less digits than its factorization.

3668278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834141.

The product of its digits is 96768, while the sum is 40.

The square root of 3668278 is about 1915.2749149926. The cubic root of 3668278 is about 154.2247519458.

The spelling of 3668278 in words is "three million, six hundred sixty-eight thousand, two hundred seventy-eight".