12450861 has 8 divisors (see below), whose sum is σ = 18445760. Its totient is φ = 8300556.

The previous prime is 12450859. The next prime is 12450863. The reversal of 12450861 is 16805421.

It is an interprime number because it is at equal distance from previous prime (12450859) and next prime (12450863).

It is not a de Polignac number, because 12450861 - 2¹ = 12450859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 461143 = 12450861 / (1 + 2 + 4 + 5 + 0 + 8 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12450863) 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, 230545 + ... + 230598.

It is an arithmetic number, because the mean of its divisors is an integer number (2305720).

Almost surely, 2^12450861 is an apocalyptic number.

It is an amenable number.

12450861 is a deficient number, since it is larger than the sum of its proper divisors (5994899).

12450861 is an equidigital number, since it uses as much as digits as its factorization.

12450861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461152 (or 461146 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12450861 is about 3528.5777588144. The cubic root of 12450861 is about 231.7749315979.

The spelling of 12450861 in words is "twelve million, four hundred fifty thousand, eight hundred sixty-one".