26330861 has 4 divisors (see below), whose sum is σ = 26387712. Its totient is φ = 26274012.

The previous prime is 26330851. The next prime is 26330879. The reversal of 26330861 is 16803362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16803362 = 2 ⋅8401681.

It is a cyclic number.

It is not a de Polignac number, because 26330861 - 2¹⁰ = 26329837 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26330831) 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, 27725 + ... + 28658.

It is an arithmetic number, because the mean of its divisors is an integer number (6596928).

Almost surely, 2^26330861 is an apocalyptic number.

It is an amenable number.

26330861 is a deficient number, since it is larger than the sum of its proper divisors (56851).

26330861 is an equidigital number, since it uses as much as digits as its factorization.

26330861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56850.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 26330861 is about 5131.3605408313. The cubic root of 26330861 is about 297.5009476702.

The spelling of 26330861 in words is "twenty-six million, three hundred thirty thousand, eight hundred sixty-one".