3659859 has 36 divisors (see below), whose sum is σ = 6325176. Its totient is φ = 2032128.

The previous prime is 3659849. The next prime is 3659861. The reversal of 3659859 is 9589563.

3659859 is a `hidden beast` number, since 3 + 6 + 598 + 59 = 666.

It is not a de Polignac number, because 3659859 - 2⁹ = 3659347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3659819) 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 35 ways as a sum of consecutive naturals, for example, 18867 + ... + 19059.

Almost surely, 2^3659859 is an apocalyptic number.

3659859 is a deficient number, since it is larger than the sum of its proper divisors (2665317).

3659859 is a wasteful number, since it uses less digits than its factorization.

3659859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 246 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 3659859 is about 1913.0757956756. The cubic root of 3659859 is about 154.1066754005.

It can be divided in two parts, 36 and 59859, that added together give a palindrome (59895).

The spelling of 3659859 in words is "three million, six hundred fifty-nine thousand, eight hundred fifty-nine".