12087705 has 64 divisors (see below), whose sum is σ = 23869440. Its totient is φ = 5101056.

The previous prime is 12087703. The next prime is 12087709. The reversal of 12087705 is 50778021.

It is a happy number.

12087705 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12087705 - 2¹ = 12087703 is a prime.

It is a super-2 number, since 2×12087705² = 292225224334050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12087703) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 145594 + ... + 145676.

It is an arithmetic number, because the mean of its divisors is an integer number (372960).

Almost surely, 2^12087705 is an apocalyptic number.

12087705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12087705 is a deficient number, since it is larger than the sum of its proper divisors (11781735).

12087705 is a wasteful number, since it uses less digits than its factorization.

12087705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 12087705 is about 3476.7376950239. The cubic root of 12087705 is about 229.4992571684.

The spelling of 12087705 in words is "twelve million, eighty-seven thousand, seven hundred five".