3956656 has 20 divisors (see below), whose sum is σ = 8363304. Its totient is φ = 1798400.

The previous prime is 3956651. The next prime is 3956663. The reversal of 3956656 is 6566593.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3956651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11065 + ... + 11416.

Almost surely, 2^3956656 is an apocalyptic number.

It is an amenable number.

3956656 is an abundant number, since it is smaller than the sum of its proper divisors (4406648).

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

3956656 is a wasteful number, since it uses less digits than its factorization.

3956656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22500 (or 22494 counting only the distinct ones).

The product of its digits is 145800, while the sum is 40.

The square root of 3956656 is about 1989.1344851467. The cubic root of 3956656 is about 158.1646523688.

It can be divided in two parts, 3 and 956656, that added together give a palindrome (956659).

The spelling of 3956656 in words is "three million, nine hundred fifty-six thousand, six hundred fifty-six".