3668418 has 48 divisors (see below), whose sum is σ = 8733816. Its totient is φ = 1105920.

The previous prime is 3668407. The next prime is 3668419. The reversal of 3668418 is 8148663.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2634129 + 1034289 = 1623^2 + 1017^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3668419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14146 + ... + 14402.

Almost surely, 2^3668418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3668418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4366908).

3668418 is an abundant number, since it is smaller than the sum of its proper divisors (5065398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3668418 is a wasteful number, since it uses less digits than its factorization.

3668418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 336 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 3668418 is about 1915.3114629219. The cubic root of 3668418 is about 154.2267139191.

The spelling of 3668418 in words is "three million, six hundred sixty-eight thousand, four hundred eighteen".