12161607 has 4 divisors (see below), whose sum is σ = 16215480. Its totient is φ = 8107736.

The previous prime is 12161599. The next prime is 12161623. The reversal of 12161607 is 70616121.

12161607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12161607 - 2³ = 12161599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12160607) 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, 2026932 + ... + 2026937.

It is an arithmetic number, because the mean of its divisors is an integer number (4053870).

Almost surely, 2^12161607 is an apocalyptic number.

12161607 is a deficient number, since it is larger than the sum of its proper divisors (4053873).

12161607 is an equidigital number, since it uses as much as digits as its factorization.

12161607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053872.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12161607 is about 3487.3495666480. The cubic root of 12161607 is about 229.9660126212.

Adding to 12161607 its reverse (70616121), we get a palindrome (82777728).

The spelling of 12161607 in words is "twelve million, one hundred sixty-one thousand, six hundred seven".