26680539 has 8 divisors (see below), whose sum is σ = 36105280. Its totient is φ = 17521416.

The previous prime is 26680523. The next prime is 26680559. The reversal of 26680539 is 93508662.

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

It is not a de Polignac number, because 26680539 - 2⁴ = 26680523 is a prime.

It is a super-2 number, since 2×26680539² = 1423702322661042, 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 = 26680497 and 26680506.

It is not an unprimeable number, because it can be changed into a prime (26680519) 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, 66169 + ... + 66570.

It is an arithmetic number, because the mean of its divisors is an integer number (4513160).

Almost surely, 2^26680539 is an apocalyptic number.

26680539 is a deficient number, since it is larger than the sum of its proper divisors (9424741).

26680539 is a wasteful number, since it uses less digits than its factorization.

26680539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132809.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 26680539 is about 5165.3208032028. The cubic root of 26680539 is about 298.8121137400.

The spelling of 26680539 in words is "twenty-six million, six hundred eighty thousand, five hundred thirty-nine".