3956566 has 8 divisors (see below), whose sum is σ = 5943960. Its totient is φ = 1975248.

The previous prime is 3956549. The next prime is 3956569. The reversal of 3956566 is 6656593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850 + ... + 2938.

It is an arithmetic number, because the mean of its divisors is an integer number (742995).

Almost surely, 2^3956566 is an apocalyptic number.

3956566 is a deficient number, since it is larger than the sum of its proper divisors (1987394).

3956566 is a wasteful number, since it uses less digits than its factorization.

3956566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038.

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

The square root of 3956566 is about 1989.1118621133. Note that the first 3 decimals coincide. The cubic root of 3956566 is about 158.1634531300.

The spelling of 3956566 in words is "three million, nine hundred fifty-six thousand, five hundred sixty-six".