3690005 has 16 divisors (see below), whose sum is σ = 5042304. Its totient is φ = 2566080.

The previous prime is 3689993. The next prime is 3690013. The reversal of 3690005 is 5000963.

It is not a de Polignac number, because 3690005 - 2¹⁰ = 3688981 is a prime.

It is a super-2 number, since 2×3690005² = 27232273800050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194 + ... + 2723.

It is an arithmetic number, because the mean of its divisors is an integer number (315144).

Almost surely, 2^3690005 is an apocalyptic number.

It is an amenable number.

3690005 is a deficient number, since it is larger than the sum of its proper divisors (1352299).

3690005 is a wasteful number, since it uses less digits than its factorization.

3690005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 3690005 is about 1920.9385726774. The cubic root of 3690005 is about 154.5286408782.

Adding to 3690005 its reverse (5000963), we get a palindrome (8690968).

The spelling of 3690005 in words is "three million, six hundred ninety thousand, five".