16707993 has 8 divisors (see below), whose sum is σ = 22453248. Its totient is φ = 11050704.

The previous prime is 16707967. The next prime is 16708001. The reversal of 16707993 is 39970761.

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

It is not a de Polignac number, because 16707993 - 2⁸ = 16707737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16707953) 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, 21546 + ... + 22307.

It is an arithmetic number, because the mean of its divisors is an integer number (2806656).

Almost surely, 2^16707993 is an apocalyptic number.

It is an amenable number.

16707993 is a deficient number, since it is larger than the sum of its proper divisors (5745255).

16707993 is a wasteful number, since it uses less digits than its factorization.

16707993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43983.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 16707993 is about 4087.5411924530. The cubic root of 16707993 is about 255.6474282643.

The spelling of 16707993 in words is "sixteen million, seven hundred seven thousand, nine hundred ninety-three".