26678161 has 4 divisors (see below), whose sum is σ = 26698212. Its totient is φ = 26658112.

The previous prime is 26678143. The next prime is 26678177. The reversal of 26678161 is 16187662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24443136 + 2235025 = 4944^2 + 1495^2 .

It is a cyclic number.

It is not a de Polignac number, because 26678161 - 2¹³ = 26669969 is a prime.

It is a deceptive number, since it divides R_26678160.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26678161.

It is not an unprimeable number, because it can be changed into a prime (26678191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7876 + ... + 10741.

It is an arithmetic number, because the mean of its divisors is an integer number (6674553).

Almost surely, 2^26678161 is an apocalyptic number.

It is an amenable number.

26678161 is a deficient number, since it is larger than the sum of its proper divisors (20051).

26678161 is a wasteful number, since it uses less digits than its factorization.

26678161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20050.

The product of its digits is 24192, while the sum is 37.

The square root of 26678161 is about 5165.0906090794. The cubic root of 26678161 is about 298.8032359044.

The spelling of 26678161 in words is "twenty-six million, six hundred seventy-eight thousand, one hundred sixty-one".