12526661 has 8 divisors (see below), whose sum is σ = 14477760. Its totient is φ = 10615968.

The previous prime is 12526621. The next prime is 12526663. The reversal of 12526661 is 16662521.

12526661 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 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 12526661 - 2¹⁰ = 12525637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12526663) 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, 9431 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (1809720).

Almost surely, 2^12526661 is an apocalyptic number.

It is an amenable number.

12526661 is a deficient number, since it is larger than the sum of its proper divisors (1951099).

12526661 is an equidigital number, since it uses as much as digits as its factorization.

12526661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20203.

The product of its digits is 4320, while the sum is 29.

The square root of 12526661 is about 3539.3023323813. The cubic root of 12526661 is about 232.2443237115.

The spelling of 12526661 in words is "twelve million, five hundred twenty-six thousand, six hundred sixty-one".