3690656 has 48 divisors (see below), whose sum is σ = 7779240. Its totient is φ = 1720320.

The previous prime is 3690629. The next prime is 3690671. The reversal of 3690656 is 6560963.

It can be written as a sum of positive squares in 4 ways, for example, as 2202256 + 1488400 = 1484^2 + 1220^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38000 + ... + 38096.

Almost surely, 2^3690656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3690656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3889620).

3690656 is an abundant number, since it is smaller than the sum of its proper divisors (4088584).

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

3690656 is a wasteful number, since it uses less digits than its factorization.

3690656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 3690656 is about 1921.1080136213. The cubic root of 3690656 is about 154.5377277882.

The spelling of 3690656 in words is "three million, six hundred ninety thousand, six hundred fifty-six".