12261859 has 8 divisors (see below), whose sum is σ = 12968640. Its totient is φ = 11561256.

The previous prime is 12261817. The next prime is 12261889. The reversal of 12261859 is 95816221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12261859 is a prime.

It is a super-2 number, since 2×12261859² = 300706372271762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12261889) 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, 2892 + ... + 5734.

It is an arithmetic number, because the mean of its divisors is an integer number (1621080).

Almost surely, 2^12261859 is an apocalyptic number.

12261859 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12261859 is a deficient number, since it is larger than the sum of its proper divisors (706781).

12261859 is a wasteful number, since it uses less digits than its factorization.

12261859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089.

The product of its digits is 8640, while the sum is 34.

The square root of 12261859 is about 3501.6937330383. The cubic root of 12261859 is about 230.5961785895.

The spelling of 12261859 in words is "twelve million, two hundred sixty-one thousand, eight hundred fifty-nine".