3551656 has 16 divisors (see below), whose sum is σ = 6722100. Its totient is φ = 1759104.

The previous prime is 3551641. The next prime is 3551663. The reversal of 3551656 is 6561553.

It can be written as a sum of positive squares in 2 ways, for example, as 3496900 + 54756 = 1870^2 + 234^2 .

It is a super-2 number, since 2×3551656² = 25228520684672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165 + ... + 2908.

Almost surely, 2^3551656 is an apocalyptic number.

It is an amenable number.

3551656 is a deficient number, since it is larger than the sum of its proper divisors (3170444).

3551656 is a wasteful number, since it uses less digits than its factorization.

3551656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4188 (or 4184 counting only the distinct ones).

The product of its digits is 13500, while the sum is 31.

The square root of 3551656 is about 1884.5837736752. The cubic root of 3551656 is about 152.5727468026.

The spelling of 3551656 in words is "three million, five hundred fifty-one thousand, six hundred fifty-six".