3659845 has 16 divisors (see below), whose sum is σ = 5315328. Its totient is φ = 2361600.

The previous prime is 3659819. The next prime is 3659849. The reversal of 3659845 is 5489563.

It is not a de Polignac number, because 3659845 - 2⁵ = 3659813 is a prime.

It is a Duffinian number.

3659845 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3659798 and 3659807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3659849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2481 + ... + 3670.

It is an arithmetic number, because the mean of its divisors is an integer number (332208).

Almost surely, 2^3659845 is an apocalyptic number.

3659845 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3659845 is a deficient number, since it is larger than the sum of its proper divisors (1655483).

3659845 is a wasteful number, since it uses less digits than its factorization.

3659845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6180.

The product of its digits is 129600, while the sum is 40.

The square root of 3659845 is about 1913.0721366430. The cubic root of 3659845 is about 154.1064788996.

The spelling of 3659845 in words is "three million, six hundred fifty-nine thousand, eight hundred forty-five".