3649868 has 6 divisors (see below), whose sum is σ = 6387276. Its totient is φ = 1824932.

The previous prime is 3649831. The next prime is 3649871. The reversal of 3649868 is 8689463.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456230 + ... + 456237.

It is an arithmetic number, because the mean of its divisors is an integer number (1064546).

Almost surely, 2^3649868 is an apocalyptic number.

It is an amenable number.

3649868 is a deficient number, since it is larger than the sum of its proper divisors (2737408).

3649868 is a wasteful number, since it uses less digits than its factorization.

3649868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912471 (or 912469 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 3649868 is about 1910.4627711630. The cubic root of 3649868 is about 153.9663163527.

The spelling of 3649868 in words is "three million, six hundred forty-nine thousand, eight hundred sixty-eight".