16406111 has 2 divisors, whose sum is σ = 16406112. Its totient is φ = 16406110.

The previous prime is 16406087. The next prime is 16406119. The reversal of 16406111 is 11160461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16406111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16406119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8203055 + 8203056.

It is an arithmetic number, because the mean of its divisors is an integer number (8203056).

Almost surely, 2^16406111 is an apocalyptic number.

16406111 is a deficient number, since it is larger than the sum of its proper divisors (1).

16406111 is an equidigital number, since it uses as much as digits as its factorization.

16406111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 16406111 is about 4050.4457779361. The cubic root of 16406111 is about 254.0983715936.

Adding to 16406111 its reverse (11160461), we get a palindrome (27566572).

The spelling of 16406111 in words is "sixteen million, four hundred six thousand, one hundred eleven".