3649895 has 4 divisors (see below), whose sum is σ = 4379880. Its totient is φ = 2919912.

The previous prime is 3649889. The next prime is 3649903. The reversal of 3649895 is 5989463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3649895 - 2⁶ = 3649831 is a prime.

It is a super-2 number, since 2×3649895² = 26643467022050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364985 + ... + 364994.

It is an arithmetic number, because the mean of its divisors is an integer number (1094970).

Almost surely, 2^3649895 is an apocalyptic number.

3649895 is a deficient number, since it is larger than the sum of its proper divisors (729985).

3649895 is an equidigital number, since it uses as much as digits as its factorization.

3649895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729984.

The product of its digits is 233280, while the sum is 44.

The square root of 3649895 is about 1910.4698375007. The cubic root of 3649895 is about 153.9666960084.

The spelling of 3649895 in words is "three million, six hundred forty-nine thousand, eight hundred ninety-five".