16620607 has 4 divisors (see below), whose sum is σ = 16638696. Its totient is φ = 16602520.

The previous prime is 16620601. The next prime is 16620671. The reversal of 16620607 is 70602661.

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

It is a cyclic number.

It is not a de Polignac number, because 16620607 - 2³ = 16620599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16620601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7588 + ... + 9529.

It is an arithmetic number, because the mean of its divisors is an integer number (4159674).

Almost surely, 2^16620607 is an apocalyptic number.

16620607 is a deficient number, since it is larger than the sum of its proper divisors (18089).

16620607 is an equidigital number, since it uses as much as digits as its factorization.

16620607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18088.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 16620607 is about 4076.8378677598. The cubic root of 16620607 is about 255.2009539883.

The spelling of 16620607 in words is "sixteen million, six hundred twenty thousand, six hundred seven".