6616947 has 4 divisors (see below), whose sum is σ = 8822600. Its totient is φ = 4411296.

The previous prime is 6616931. The next prime is 6616991. The reversal of 6616947 is 7496166.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6616947 - 2⁴ = 6616931 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6616447) 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, 1102822 + ... + 1102827.

It is an arithmetic number, because the mean of its divisors is an integer number (2205650).

Almost surely, 2^6616947 is an apocalyptic number.

6616947 is a deficient number, since it is larger than the sum of its proper divisors (2205653).

6616947 is a wasteful number, since it uses less digits than its factorization.

6616947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205652.

The product of its digits is 54432, while the sum is 39.

The square root of 6616947 is about 2572.3427065615. The cubic root of 6616947 is about 187.7381578143.

The spelling of 6616947 in words is "six million, six hundred sixteen thousand, nine hundred forty-seven".