16720207 has 8 divisors (see below), whose sum is σ = 19224576. Its totient is φ = 14244792.

The previous prime is 16720199. The next prime is 16720217. The reversal of 16720207 is 70202761.

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 16720207 - 2³ = 16720199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16720217) 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, 5983 + ... + 8320.

It is an arithmetic number, because the mean of its divisors is an integer number (2403072).

Almost surely, 2^16720207 is an apocalyptic number.

16720207 is a deficient number, since it is larger than the sum of its proper divisors (2504369).

16720207 is a wasteful number, since it uses less digits than its factorization.

16720207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14477.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 16720207 is about 4089.0349717262. The cubic root of 16720207 is about 255.7097081788.

Adding to 16720207 its reverse (70202761), we get a palindrome (86922968).

It can be divided in two parts, 167 and 20207, that multiplied together give a square (3374569 = 1837²).

The spelling of 16720207 in words is "sixteen million, seven hundred twenty thousand, two hundred seven".