3689285 has 4 divisors (see below), whose sum is σ = 4427148. Its totient is φ = 2951424.

The previous prime is 3689281. The next prime is 3689291. The reversal of 3689285 is 5829863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5829863 = 13 ⋅448451.

It can be written as a sum of positive squares in 2 ways, for example, as 1481089 + 2208196 = 1217^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 3689285 - 2² = 3689281 is a prime.

It is a super-2 number, since 2×3689285² = 27221647622450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689281) 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, 368924 + ... + 368933.

It is an arithmetic number, because the mean of its divisors is an integer number (1106787).

Almost surely, 2^3689285 is an apocalyptic number.

It is an amenable number.

3689285 is a deficient number, since it is larger than the sum of its proper divisors (737863).

3689285 is an equidigital number, since it uses as much as digits as its factorization.

3689285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737862.

The product of its digits is 103680, while the sum is 41.

The square root of 3689285 is about 1920.7511551474. The cubic root of 3689285 is about 154.5185895947.

The spelling of 3689285 in words is "three million, six hundred eighty-nine thousand, two hundred eighty-five".