6651347 has 4 divisors (see below), whose sum is σ = 6940560. Its totient is φ = 6362136.

The previous prime is 6651343. The next prime is 6651361. The reversal of 6651347 is 7431566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7431566 = 2 ⋅3715783.

It is a cyclic number.

It is not a de Polignac number, because 6651347 - 2² = 6651343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6651343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144572 + ... + 144617.

It is an arithmetic number, because the mean of its divisors is an integer number (1735140).

Almost surely, 2^6651347 is an apocalyptic number.

6651347 is a deficient number, since it is larger than the sum of its proper divisors (289213).

6651347 is a wasteful number, since it uses less digits than its factorization.

6651347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289212.

The product of its digits is 15120, while the sum is 32.

The square root of 6651347 is about 2579.0205505191. The cubic root of 6651347 is about 188.0629316253.

The spelling of 6651347 in words is "six million, six hundred fifty-one thousand, three hundred forty-seven".