6368649 has 16 divisors (see below), whose sum is σ = 9766272. Its totient is φ = 3616128.

The previous prime is 6368647. The next prime is 6368711. The reversal of 6368649 is 9468636.

It is not a de Polignac number, because 6368649 - 2¹ = 6368647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6368649.

It is not an unprimeable number, because it can be changed into a prime (6368647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2757 + ... + 4509.

It is an arithmetic number, because the mean of its divisors is an integer number (610392).

Almost surely, 2^6368649 is an apocalyptic number.

It is an amenable number.

6368649 is a deficient number, since it is larger than the sum of its proper divisors (3397623).

6368649 is a wasteful number, since it uses less digits than its factorization.

6368649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936.

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

The square root of 6368649 is about 2523.6182357877. The cubic root of 6368649 is about 185.3598935274.

The spelling of 6368649 in words is "six million, three hundred sixty-eight thousand, six hundred forty-nine".