12061905 has 8 divisors (see below), whose sum is σ = 19299072. Its totient is φ = 6433008.

The previous prime is 12061879. The next prime is 12061919. The reversal of 12061905 is 50916021.

12061905 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12061905 - 2⁵ = 12061873 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402049 + ... + 402078.

It is an arithmetic number, because the mean of its divisors is an integer number (2412384).

Almost surely, 2^12061905 is an apocalyptic number.

12061905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12061905 is a deficient number, since it is larger than the sum of its proper divisors (7237167).

12061905 is an equidigital number, since it uses as much as digits as its factorization.

12061905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804135.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 12061905 is about 3473.0253382318. The cubic root of 12061905 is about 229.3358597744.

Adding to 12061905 its reverse (50916021), we get a palindrome (62977926).

The spelling of 12061905 in words is "twelve million, sixty-one thousand, nine hundred five".