11906805 has 8 divisors (see below), whose sum is σ = 19050912. Its totient is φ = 6350288.

The previous prime is 11906777. The next prime is 11906809. The reversal of 11906805 is 50860911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11906805 - 2⁷ = 11906677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11906809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396879 + ... + 396908.

It is an arithmetic number, because the mean of its divisors is an integer number (2381364).

Almost surely, 2^11906805 is an apocalyptic number.

11906805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11906805 is a deficient number, since it is larger than the sum of its proper divisors (7144107).

11906805 is an equidigital number, since it uses as much as digits as its factorization.

11906805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793795.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 11906805 is about 3450.6238566381. The cubic root of 11906805 is about 228.3486317678.

The spelling of 11906805 in words is "eleven million, nine hundred six thousand, eight hundred five".