26693887 has 4 divisors (see below), whose sum is σ = 29120616. Its totient is φ = 24267160.

The previous prime is 26693881. The next prime is 26693897. The reversal of 26693887 is 78839662.

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

It is a cyclic number.

It is not a de Polignac number, because 26693887 - 2¹⁹ = 26169599 is a prime.

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 26693887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26693881) 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, 1213348 + ... + 1213369.

It is an arithmetic number, because the mean of its divisors is an integer number (7280154).

Almost surely, 2^26693887 is an apocalyptic number.

26693887 is a deficient number, since it is larger than the sum of its proper divisors (2426729).

26693887 is a wasteful number, since it uses less digits than its factorization.

26693887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426728.

The product of its digits is 870912, while the sum is 49.

The square root of 26693887 is about 5166.6127201485. The cubic root of 26693887 is about 298.8619363109.

It can be divided in two parts, 2669 and 3887, that added together give a palindrome (6556).

The spelling of 26693887 in words is "twenty-six million, six hundred ninety-three thousand, eight hundred eighty-seven".