3646469 has 4 divisors (see below), whose sum is σ = 3652044. Its totient is φ = 3640896.

The previous prime is 3646463. The next prime is 3646471. The reversal of 3646469 is 9646463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9646463 = 17 ⋅567439.

It can be written as a sum of positive squares in 2 ways, for example, as 1181569 + 2464900 = 1087^2 + 1570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3646469 is a prime.

It is a super-2 number, since 2×3646469² = 26593472335922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646463) 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, 1652 + ... + 3165.

It is an arithmetic number, because the mean of its divisors is an integer number (913011).

Almost surely, 2^3646469 is an apocalyptic number.

It is an amenable number.

3646469 is a deficient number, since it is larger than the sum of its proper divisors (5575).

3646469 is an equidigital number, since it uses as much as digits as its factorization.

3646469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5574.

The product of its digits is 93312, while the sum is 38.

The square root of 3646469 is about 1909.5729889166. The cubic root of 3646469 is about 153.9185069481.

The spelling of 3646469 in words is "three million, six hundred forty-six thousand, four hundred sixty-nine".