3869565 has 32 divisors (see below), whose sum is σ = 7153920. Its totient is φ = 1749504.

The previous prime is 3869561. The next prime is 3869573. The reversal of 3869565 is 5659683.

It is not a de Polignac number, because 3869565 - 2² = 3869561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3869561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14251 + ... + 14519.

It is an arithmetic number, because the mean of its divisors is an integer number (223560).

Almost surely, 2^3869565 is an apocalyptic number.

3869565 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3869565 is a deficient number, since it is larger than the sum of its proper divisors (3284355).

3869565 is a wasteful number, since it uses less digits than its factorization.

3869565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its digits is 194400, while the sum is 42.

The square root of 3869565 is about 1967.1209927201. The cubic root of 3869565 is about 156.9955642654.

The spelling of 3869565 in words is "three million, eight hundred sixty-nine thousand, five hundred sixty-five".