26861701 has 4 divisors (see below), whose sum is σ = 26873100. Its totient is φ = 26850304.

The previous prime is 26861699. The next prime is 26861711. The reversal of 26861701 is 10716862.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3348900 + 23512801 = 1830^2 + 4849^2 .

It is a cyclic number.

It is not a de Polignac number, because 26861701 - 2¹ = 26861699 is a prime.

It is a super-2 number, since 2×26861701² = 1443101961226802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26861711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706 + ... + 7363.

It is an arithmetic number, because the mean of its divisors is an integer number (6718275).

Almost surely, 2^26861701 is an apocalyptic number.

It is an amenable number.

26861701 is a deficient number, since it is larger than the sum of its proper divisors (11399).

26861701 is an equidigital number, since it uses as much as digits as its factorization.

26861701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11398.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 26861701 is about 5182.8275101531. The cubic root of 26861701 is about 299.4869044249.

The spelling of 26861701 in words is "twenty-six million, eight hundred sixty-one thousand, seven hundred one".