3813565 has 8 divisors (see below), whose sum is σ = 5230080. Its totient is φ = 2614992.

The previous prime is 3813539. The next prime is 3813571. The reversal of 3813565 is 5653183.

3813565 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3813565 - 2¹⁵ = 3780797 is a prime.

3813565 is strictly pandigital in base 8.

It is a congruent number.

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, 54445 + ... + 54514.

It is an arithmetic number, because the mean of its divisors is an integer number (653760).

Almost surely, 2^3813565 is an apocalyptic number.

3813565 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3813565 is a deficient number, since it is larger than the sum of its proper divisors (1416515).

3813565 is a wasteful number, since it uses less digits than its factorization.

3813565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108971.

The product of its digits is 10800, while the sum is 31.

The square root of 3813565 is about 1952.8351184880. The cubic root of 3813565 is about 156.2345392702.

The spelling of 3813565 in words is "three million, eight hundred thirteen thousand, five hundred sixty-five".