2167906 has 16 divisors (see below), whose sum is σ = 3528000. Its totient is φ = 993168.

The previous prime is 2167903. The next prime is 2167933. The reversal of 2167906 is 6097612.

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2167903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4965 + ... + 5383.

It is an arithmetic number, because the mean of its divisors is an integer number (220500).

2^2167906 is an apocalyptic number.

2167906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2167906 is a deficient number, since it is larger than the sum of its proper divisors (1360094).

2167906 is a wasteful number, since it uses less digits than its factorization.

2167906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 2167906 is about 1472.3810648063. The cubic root of 2167906 is about 129.4236019718.

The spelling of 2167906 in words is "two million, one hundred sixty-seven thousand, nine hundred six".