16716947 has 8 divisors (see below), whose sum is σ = 18220944. Its totient is φ = 15244128.

The previous prime is 16716943. The next prime is 16716949. The reversal of 16716947 is 74961761.

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

It is a cyclic number.

It is not a de Polignac number, because 16716947 - 2² = 16716943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16716943) 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, 6668 + ... + 8825.

It is an arithmetic number, because the mean of its divisors is an integer number (2277618).

Almost surely, 2^16716947 is an apocalyptic number.

16716947 is a deficient number, since it is larger than the sum of its proper divisors (1503997).

16716947 is a wasteful number, since it uses less digits than its factorization.

16716947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15589.

The product of its digits is 63504, while the sum is 41.

The square root of 16716947 is about 4088.6363252312. The cubic root of 16716947 is about 255.6930882124.

The spelling of 16716947 in words is "sixteen million, seven hundred sixteen thousand, nine hundred forty-seven".