6863649 has 8 divisors (see below), whose sum is σ = 9855552. Its totient is φ = 4223760.

The previous prime is 6863629. The next prime is 6863651. The reversal of 6863649 is 9463686.

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

It is not a de Polignac number, because 6863649 - 2⁹ = 6863137 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6863649.

It is not an unprimeable number, because it can be changed into a prime (6863629) by changing a digit.

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, 87957 + ... + 88034.

It is an arithmetic number, because the mean of its divisors is an integer number (1231944).

Almost surely, 2^6863649 is an apocalyptic number.

It is an amenable number.

6863649 is a deficient number, since it is larger than the sum of its proper divisors (2991903).

6863649 is a wasteful number, since it uses less digits than its factorization.

6863649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176007.

The product of its digits is 186624, while the sum is 42.

The square root of 6863649 is about 2619.8566754691. The cubic root of 6863649 is about 190.0429173595.

The spelling of 6863649 in words is "six million, eight hundred sixty-three thousand, six hundred forty-nine".