26668047 has 8 divisors (see below), whose sum is σ = 40637056. Its totient is φ = 15238872.

The previous prime is 26668021. The next prime is 26668051. The reversal of 26668047 is 74086662.

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

It is not a de Polignac number, because 26668047 - 2¹¹ = 26665999 is a prime.

It is a super-2 number, since 2×26668047² = 1422369461588418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26667996 and 26668014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26668007) 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, 634933 + ... + 634974.

It is an arithmetic number, because the mean of its divisors is an integer number (5079632).

Almost surely, 2^26668047 is an apocalyptic number.

26668047 is a deficient number, since it is larger than the sum of its proper divisors (13969009).

26668047 is a wasteful number, since it uses less digits than its factorization.

26668047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269917.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 26668047 is about 5164.1114434141. Note that the first 3 decimals coincide. The cubic root of 26668047 is about 298.7654712085.

The spelling of 26668047 in words is "twenty-six million, six hundred sixty-eight thousand, forty-seven".