3661946 has 16 divisors (see below), whose sum is σ = 5983200. Its totient is φ = 1674288.

The previous prime is 3661943. The next prime is 3661949. The reversal of 3661946 is 6491663.

It is an interprime number because it is at equal distance from previous prime (3661943) and next prime (3661949).

It is not an unprimeable number, because it can be changed into a prime (3661943) 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 7 ways as a sum of consecutive naturals, for example, 560 + ... + 2763.

It is an arithmetic number, because the mean of its divisors is an integer number (373950).

Almost surely, 2^3661946 is an apocalyptic number.

3661946 is a deficient number, since it is larger than the sum of its proper divisors (2321254).

3661946 is a wasteful number, since it uses less digits than its factorization.

3661946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373.

The product of its digits is 23328, while the sum is 35.

The square root of 3661946 is about 1913.6211746320. The cubic root of 3661946 is about 154.1359624593.

The spelling of 3661946 in words is "three million, six hundred sixty-one thousand, nine hundred forty-six".