3659687 has 4 divisors (see below), whose sum is σ = 3744840. Its totient is φ = 3574536.

The previous prime is 3659683. The next prime is 3659717. The reversal of 3659687 is 7869563.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3659687 - 2² = 3659683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3659683) 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, 42512 + ... + 42597.

It is an arithmetic number, because the mean of its divisors is an integer number (936210).

Almost surely, 2^3659687 is an apocalyptic number.

3659687 is a deficient number, since it is larger than the sum of its proper divisors (85153).

3659687 is an equidigital number, since it uses as much as digits as its factorization.

3659687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85152.

The product of its digits is 272160, while the sum is 44.

The square root of 3659687 is about 1913.0308413614. The cubic root of 3659687 is about 154.1042612124.

The spelling of 3659687 in words is "three million, six hundred fifty-nine thousand, six hundred eighty-seven".