3646589 has 4 divisors (see below), whose sum is σ = 3724224. Its totient is φ = 3568956.

The previous prime is 3646583. The next prime is 3646603. The reversal of 3646589 is 9856463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9856463 = 53 ⋅185971.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3646589 is a prime.

It is a super-2 number, since 2×3646589² = 26595222669842, 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 (3646583) 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, 38747 + ... + 38840.

It is an arithmetic number, because the mean of its divisors is an integer number (931056).

Almost surely, 2^3646589 is an apocalyptic number.

It is an amenable number.

3646589 is a deficient number, since it is larger than the sum of its proper divisors (77635).

3646589 is an equidigital number, since it uses as much as digits as its factorization.

3646589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77634.

The product of its digits is 155520, while the sum is 41.

The square root of 3646589 is about 1909.6044092953. The cubic root of 3646589 is about 153.9201953411.

The spelling of 3646589 in words is "three million, six hundred forty-six thousand, five hundred eighty-nine".