26516993 has 4 divisors (see below), whose sum is σ = 26540628. Its totient is φ = 26493360.

The previous prime is 26516983. The next prime is 26517011. The reversal of 26516993 is 39961562.

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 13786369 + 12730624 = 3713^2 + 3568^2 .

It is a cyclic number.

It is not a de Polignac number, because 26516993 - 2¹⁴ = 26500609 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 26516993.

It is not an unprimeable number, because it can be changed into a prime (26516983) 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, 10046 + ... + 12407.

It is an arithmetic number, because the mean of its divisors is an integer number (6635157).

Almost surely, 2^26516993 is an apocalyptic number.

It is an amenable number.

26516993 is a deficient number, since it is larger than the sum of its proper divisors (23635).

26516993 is a wasteful number, since it uses less digits than its factorization.

26516993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23634.

The product of its digits is 87480, while the sum is 41.

The square root of 26516993 is about 5149.4653120494. The cubic root of 26516993 is about 298.2003104997.

The spelling of 26516993 in words is "twenty-six million, five hundred sixteen thousand, nine hundred ninety-three".