26640701 has 2 divisors, whose sum is σ = 26640702. Its totient is φ = 26640700.

The previous prime is 26640689. The next prime is 26640707. The reversal of 26640701 is 10704662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22335076 + 4305625 = 4726^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 26640701 - 2¹⁰ = 26639677 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26640707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13320350 + 13320351.

It is an arithmetic number, because the mean of its divisors is an integer number (13320351).

Almost surely, 2^26640701 is an apocalyptic number.

It is an amenable number.

26640701 is a deficient number, since it is larger than the sum of its proper divisors (1).

26640701 is an equidigital number, since it uses as much as digits as its factorization.

26640701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 26640701 is about 5161.4630677745. The cubic root of 26640701 is about 298.6633160620.

The spelling of 26640701 in words is "twenty-six million, six hundred forty thousand, seven hundred one".