3707856 has 50 divisors (see below), whose sum is σ = 10735362. Its totient is φ = 1235520.

The previous prime is 3707849. The next prime is 3707857. The reversal of 3707856 is 6587073.

It can be written as a sum of positive squares in only one way, i.e., 3240000 + 467856 = 1800^2 + 684^2 .

It is a super-2 number, since 2×3707856² = 27496392233472, which contains 22 as substring.

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 3707856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3707857) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 135 + ... + 2726.

Almost surely, 2^3707856 is an apocalyptic number.

3707856 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 3707856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5367681).

3707856 is an abundant number, since it is smaller than the sum of its proper divisors (7027506).

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

3707856 is a wasteful number, since it uses less digits than its factorization.

3707856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881 (or 2866 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 3707856 is about 1925.5793933256. The cubic root of 3707856 is about 154.7774259493. Note that the first 3 decimals are identical.

The spelling of 3707856 in words is "three million, seven hundred seven thousand, eight hundred fifty-six".