5649864 has 32 divisors (see below), whose sum is σ = 15409440. Its totient is φ = 1712000.

The previous prime is 5649851. The next prime is 5649871. The reversal of 5649864 is 4689465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10437 + ... + 10964.

It is an arithmetic number, because the mean of its divisors is an integer number (481545).

Almost surely, 2^5649864 is an apocalyptic number.

It is an amenable number.

5649864 is an abundant number, since it is smaller than the sum of its proper divisors (9759576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5649864 is a wasteful number, since it uses less digits than its factorization.

5649864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21421 (or 21417 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 5649864 is about 2376.9442568138. The cubic root of 5649864 is about 178.1063203557.

The spelling of 5649864 in words is "five million, six hundred forty-nine thousand, eight hundred sixty-four".