16400067 has 4 divisors (see below), whose sum is σ = 21866760. Its totient is φ = 10933376.

The previous prime is 16400047. The next prime is 16400093. The reversal of 16400067 is 76000461.

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 16400067 - 2⁷ = 16399939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16400017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2733342 + ... + 2733347.

It is an arithmetic number, because the mean of its divisors is an integer number (5466690).

Almost surely, 2^16400067 is an apocalyptic number.

16400067 is a deficient number, since it is larger than the sum of its proper divisors (5466693).

16400067 is an equidigital number, since it uses as much as digits as its factorization.

16400067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5466692.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 16400067 is about 4049.6996184902. The cubic root of 16400067 is about 254.0671645393.

The spelling of 16400067 in words is "sixteen million, four hundred thousand, sixty-seven".