26663145 has 8 divisors (see below), whose sum is σ = 42661056. Its totient is φ = 14220336.

The previous prime is 26663129. The next prime is 26663171. The reversal of 26663145 is 54136662.

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

It is not a de Polignac number, because 26663145 - 2⁴ = 26663129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888757 + ... + 888786.

It is an arithmetic number, because the mean of its divisors is an integer number (5332632).

Almost surely, 2^26663145 is an apocalyptic number.

It is an amenable number.

26663145 is a deficient number, since it is larger than the sum of its proper divisors (15997911).

26663145 is a wasteful number, since it uses less digits than its factorization.

26663145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777551.

The product of its digits is 25920, while the sum is 33.

The square root of 26663145 is about 5163.6367997759. The cubic root of 26663145 is about 298.7471641801.

The spelling of 26663145 in words is "twenty-six million, six hundred sixty-three thousand, one hundred forty-five".