3649505 has 8 divisors (see below), whose sum is σ = 4530600. Its totient is φ = 2818816.

The previous prime is 3649487. The next prime is 3649511. The reversal of 3649505 is 5059463.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 141376 + 3508129 = 376^2 + 1873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3649505 - 2¹² = 3645409 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12440 + ... + 12729.

It is an arithmetic number, because the mean of its divisors is an integer number (566325).

Almost surely, 2^3649505 is an apocalyptic number.

It is an amenable number.

3649505 is a deficient number, since it is larger than the sum of its proper divisors (881095).

3649505 is a wasteful number, since it uses less digits than its factorization.

3649505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25203.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 3649505 is about 1910.3677656410. The cubic root of 3649505 is about 153.9612119100.

The spelling of 3649505 in words is "three million, six hundred forty-nine thousand, five hundred five".