3898565 has 16 divisors (see below), whose sum is σ = 5178816. Its totient is φ = 2793600.

The previous prime is 3898561. The next prime is 3898589. The reversal of 3898565 is 5658983.

It is not a de Polignac number, because 3898565 - 2² = 3898561 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 (3898561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3530 + ... + 4500.

It is an arithmetic number, because the mean of its divisors is an integer number (323676).

Almost surely, 2^3898565 is an apocalyptic number.

It is an amenable number.

3898565 is a deficient number, since it is larger than the sum of its proper divisors (1280251).

3898565 is a wasteful number, since it uses less digits than its factorization.

3898565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060.

The product of its digits is 259200, while the sum is 44.

The square root of 3898565 is about 1974.4784121383. The cubic root of 3898565 is about 157.3867835049.

The spelling of 3898565 in words is "three million, eight hundred ninety-eight thousand, five hundred sixty-five".