3718656 has 80 divisors (see below), whose sum is σ = 11048400. Its totient is φ = 1234944.

The previous prime is 3718651. The next prime is 3718657. The reversal of 3718656 is 6568173.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3718656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3718651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13690 + ... + 13958.

It is an arithmetic number, because the mean of its divisors is an integer number (138105).

Almost surely, 2^3718656 is an apocalyptic number.

3718656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3718656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5524200).

3718656 is an abundant number, since it is smaller than the sum of its proper divisors (7329744).

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

3718656 is an equidigital number, since it uses as much as digits as its factorization.

3718656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 274 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 3718656 is about 1928.3817049537. The cubic root of 3718656 is about 154.9275554625.

The spelling of 3718656 in words is "three million, seven hundred eighteen thousand, six hundred fifty-six".