16620611 has 16 divisors (see below), whose sum is σ = 21173760. Its totient is φ = 12700800.

The previous prime is 16620601. The next prime is 16620671. The reversal of 16620611 is 11602661.

It is not a de Polignac number, because 16620611 - 2⁶ = 16620547 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1415 + ... + 5936.

It is an arithmetic number, because the mean of its divisors is an integer number (1323360).

Almost surely, 2^16620611 is an apocalyptic number.

16620611 is a deficient number, since it is larger than the sum of its proper divisors (4553149).

16620611 is a wasteful number, since it uses less digits than its factorization.

16620611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7394.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 16620611 is about 4076.8383583360. The cubic root of 16620611 is about 255.2009744610.

The spelling of 16620611 in words is "sixteen million, six hundred twenty thousand, six hundred eleven".