3654445 has 4 divisors (see below), whose sum is σ = 4385340. Its totient is φ = 2923552.

The previous prime is 3654437. The next prime is 3654451. The reversal of 3654445 is 5444563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5444563 = 2141 ⋅2543.

It can be written as a sum of positive squares in 2 ways, for example, as 1052676 + 2601769 = 1026^2 + 1613^2 .

It is a cyclic number.

It is not a de Polignac number, because 3654445 - 2³ = 3654437 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 6⁸ + 5⁵ + 4 + 4 + 4⁷ + 5⁹ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365440 + ... + 365449.

It is an arithmetic number, because the mean of its divisors is an integer number (1096335).

Almost surely, 2^3654445 is an apocalyptic number.

It is an amenable number.

3654445 is a deficient number, since it is larger than the sum of its proper divisors (730895).

3654445 is an equidigital number, since it uses as much as digits as its factorization.

3654445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730894.

The product of its digits is 28800, while the sum is 31.

The square root of 3654445 is about 1911.6602731657. The cubic root of 3654445 is about 154.0306483106.

The spelling of 3654445 in words is "three million, six hundred fifty-four thousand, four hundred forty-five".