26680709 has 8 divisors (see below), whose sum is σ = 29816640. Its totient is φ = 23663200.

The previous prime is 26680691. The next prime is 26680711. The reversal of 26680709 is 90708662.

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

It is not a de Polignac number, because 26680709 - 2⁸ = 26680453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26680789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29129 + ... + 30030.

It is an arithmetic number, because the mean of its divisors is an integer number (3727080).

Almost surely, 2^26680709 is an apocalyptic number.

It is an amenable number.

26680709 is a deficient number, since it is larger than the sum of its proper divisors (3135931).

26680709 is a wasteful number, since it uses less digits than its factorization.

26680709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59211.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 26680709 is about 5165.3372590761. The cubic root of 26680709 is about 298.8127483843.

The spelling of 26680709 in words is "twenty-six million, six hundred eighty thousand, seven hundred nine".