3654649 has 4 divisors (see below), whose sum is σ = 3709264. Its totient is φ = 3600036.

The previous prime is 3654647. The next prime is 3654671. The reversal of 3654649 is 9464563.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 3654649 - 2¹ = 3654647 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6³ + 5⁹ + 4⁴ + 6⁸ + 4⁵ + 9³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3654641) 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, 27207 + ... + 27340.

It is an arithmetic number, because the mean of its divisors is an integer number (927316).

Almost surely, 2^3654649 is an apocalyptic number.

It is an amenable number.

3654649 is a deficient number, since it is larger than the sum of its proper divisors (54615).

3654649 is an equidigital number, since it uses as much as digits as its factorization.

3654649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54614.

The product of its digits is 77760, while the sum is 37.

The square root of 3654649 is about 1911.7136291819. The cubic root of 3654649 is about 154.0335143790.

The spelling of 3654649 in words is "three million, six hundred fifty-four thousand, six hundred forty-nine".