26664145 has 8 divisors (see below), whose sum is σ = 32777640. Its totient is φ = 20810880.

The previous prime is 26664139. The next prime is 26664149. The reversal of 26664145 is 54146662.

It can be written as a sum of positive squares in 4 ways, for example, as 938961 + 25725184 = 969^2 + 5072^2 .

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

It is not a de Polignac number, because 26664145 - 2⁷ = 26664017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26664145.

It is not an unprimeable number, because it can be changed into a prime (26664149) 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, 64830 + ... + 65239.

It is an arithmetic number, because the mean of its divisors is an integer number (4097205).

Almost surely, 2^26664145 is an apocalyptic number.

It is an amenable number.

26664145 is a deficient number, since it is larger than the sum of its proper divisors (6113495).

26664145 is a wasteful number, since it uses less digits than its factorization.

26664145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130115.

The product of its digits is 34560, while the sum is 34.

The square root of 26664145 is about 5163.7336298458. The cubic root of 26664145 is about 298.7508989662.

The spelling of 26664145 in words is "twenty-six million, six hundred sixty-four thousand, one hundred forty-five".