3678449 has 4 divisors (see below), whose sum is σ = 3694080. Its totient is φ = 3662820.

The previous prime is 3678431. The next prime is 3678461. The reversal of 3678449 is 9448763.

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: 9448763 = 401 ⋅23563.

It is a cyclic number.

It is not a de Polignac number, because 3678449 - 2²⁰ = 2629873 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 6 + 7 + 8⁷ + 4⁵ + 4¹⁰ + 9⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3678149) 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, 7457 + ... + 7934.

It is an arithmetic number, because the mean of its divisors is an integer number (923520).

Almost surely, 2^3678449 is an apocalyptic number.

It is an amenable number.

3678449 is a deficient number, since it is larger than the sum of its proper divisors (15631).

3678449 is a wasteful number, since it uses less digits than its factorization.

3678449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15630.

The product of its digits is 145152, while the sum is 41.

The square root of 3678449 is about 1917.9283094005. The cubic root of 3678449 is about 154.3671595837.

The spelling of 3678449 in words is "three million, six hundred seventy-eight thousand, four hundred forty-nine".