3659897 has 4 divisors (see below), whose sum is σ = 3663780. Its totient is φ = 3656016.

The previous prime is 3659861. The next prime is 3659917. The reversal of 3659897 is 7989563.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1032256 + 2627641 = 1016^2 + 1621^2 .

It is a cyclic number.

It is not a de Polignac number, because 3659897 - 2¹⁰ = 3658873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3659497) 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, 479 + ... + 2747.

It is an arithmetic number, because the mean of its divisors is an integer number (915945).

Almost surely, 2^3659897 is an apocalyptic number.

It is an amenable number.

3659897 is a deficient number, since it is larger than the sum of its proper divisors (3883).

3659897 is a wasteful number, since it uses less digits than its factorization.

3659897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882.

The product of its digits is 408240, while the sum is 47.

The square root of 3659897 is about 1913.0857273003. The cubic root of 3659897 is about 154.1072087574.

The spelling of 3659897 in words is "three million, six hundred fifty-nine thousand, eight hundred ninety-seven".