3668840 has 32 divisors (see below), whose sum is σ = 9434880. Its totient is φ = 1257792.

The previous prime is 3668837. The next prime is 3668851. The reversal of 3668840 is 488663.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 3668840.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6272 + ... + 6831.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

Almost surely, 2^3668840 is an apocalyptic number.

It is an amenable number.

3668840 is an abundant number, since it is smaller than the sum of its proper divisors (5766040).

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

3668840 is a wasteful number, since it uses less digits than its factorization.

3668840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13121 (or 13117 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 3668840 is about 1915.4216246038. The cubic root of 3668840 is about 154.2326275652.

The spelling of 3668840 in words is "three million, six hundred sixty-eight thousand, eight hundred forty".