6649379 has 8 divisors (see below), whose sum is σ = 7342272. Its totient is φ = 5971240.

The previous prime is 6649367. The next prime is 6649387. The reversal of 6649379 is 9739466.

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

It is a de Polignac number, because none of the positive numbers 2^k-6649379 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6649319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2729 + ... + 4554.

It is an arithmetic number, because the mean of its divisors is an integer number (917784).

Almost surely, 2^6649379 is an apocalyptic number.

6649379 is a deficient number, since it is larger than the sum of its proper divisors (692893).

6649379 is a wasteful number, since it uses less digits than its factorization.

6649379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377.

The product of its digits is 244944, while the sum is 44.

The square root of 6649379 is about 2578.6389820989. The cubic root of 6649379 is about 188.0443817808.

The spelling of 6649379 in words is "six million, six hundred forty-nine thousand, three hundred seventy-nine".