3659858 has 16 divisors (see below), whose sum is σ = 5751000. Its totient is φ = 1744512.

The previous prime is 3659849. The next prime is 3659861. The reversal of 3659858 is 8589563.

It can be written as a sum of positive squares in 4 ways, for example, as 1951609 + 1708249 = 1397^2 + 1307^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4808 + ... + 5516.

Almost surely, 2^3659858 is an apocalyptic number.

3659858 is a deficient number, since it is larger than the sum of its proper divisors (2091142).

3659858 is a wasteful number, since it uses less digits than its factorization.

3659858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829.

The product of its digits is 259200, while the sum is 44.

The square root of 3659858 is about 1913.0755343164. The cubic root of 3659858 is about 154.1066613647.

The spelling of 3659858 in words is "three million, six hundred fifty-nine thousand, eight hundred fifty-eight".