3946566 has 32 divisors (see below), whose sum is σ = 8951040. Its totient is φ = 1149984.

The previous prime is 3946549. The next prime is 3946571. The reversal of 3946566 is 6656493.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151 + ... + 2813.

It is an arithmetic number, because the mean of its divisors is an integer number (279720).

Almost surely, 2^3946566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3946566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4475520).

3946566 is an abundant number, since it is smaller than the sum of its proper divisors (5004474).

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

3946566 is a wasteful number, since it uses less digits than its factorization.

3946566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700.

The product of its digits is 116640, while the sum is 39.

The square root of 3946566 is about 1986.5965871309. The cubic root of 3946566 is about 158.0300909414.

The spelling of 3946566 in words is "three million, nine hundred forty-six thousand, five hundred sixty-six".