3659566 has 8 divisors (see below), whose sum is σ = 5540040. Its totient is φ = 1812888.

The previous prime is 3659543. The next prime is 3659567. The reversal of 3659566 is 6659563.

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 (3659567) 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, 8176 + ... + 8611.

It is an arithmetic number, because the mean of its divisors is an integer number (692505).

Almost surely, 2^3659566 is an apocalyptic number.

3659566 is a deficient number, since it is larger than the sum of its proper divisors (1880474).

3659566 is a wasteful number, since it uses less digits than its factorization.

3659566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16898.

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

The square root of 3659566 is about 1912.9992158911. Note that the first 3 decimals coincide. The cubic root of 3659566 is about 154.1025628139.

It can be divided in two parts, 3659 and 566, that added together give a square (4225 = 65²).

The spelling of 3659566 in words is "three million, six hundred fifty-nine thousand, five hundred sixty-six".