26601601 has 8 divisors (see below), whose sum is σ = 29189160. Its totient is φ = 24091392.

The previous prime is 26601599. The next prime is 26601623. The reversal of 26601601 is 10610662.

It can be written as a sum of positive squares in 4 ways, for example, as 1048576 + 25553025 = 1024^2 + 5055^2 .

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

It is not a de Polignac number, because 26601601 - 2¹ = 26601599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26601101) 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 7 ways as a sum of consecutive naturals, for example, 18616 + ... + 19993.

It is an arithmetic number, because the mean of its divisors is an integer number (3648645).

Almost surely, 2^26601601 is an apocalyptic number.

It is an amenable number.

26601601 is a deficient number, since it is larger than the sum of its proper divisors (2587559).

26601601 is a wasteful number, since it uses less digits than its factorization.

26601601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38675.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 26601601 is about 5157.6739912484. The cubic root of 26601601 is about 298.5171305521.

It can be divided in two parts, 2660160 and 1, that added together give a square (2660161 = 1631²).

The spelling of 26601601 in words is "twenty-six million, six hundred one thousand, six hundred one".