6650947 has 4 divisors (see below), whose sum is σ = 6880320. Its totient is φ = 6421576.

The previous prime is 6650929. The next prime is 6650971. The reversal of 6650947 is 7490566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7490566 = 2 ⋅3745283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6650947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6657947) 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, 114643 + ... + 114700.

It is an arithmetic number, because the mean of its divisors is an integer number (1720080).

Almost surely, 2^6650947 is an apocalyptic number.

6650947 is a deficient number, since it is larger than the sum of its proper divisors (229373).

6650947 is a wasteful number, since it uses less digits than its factorization.

6650947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229372.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 6650947 is about 2578.9430005334. The cubic root of 6650947 is about 188.0591616280.

The spelling of 6650947 in words is "six million, six hundred fifty thousand, nine hundred forty-seven".