26640682 has 8 divisors (see below), whose sum is σ = 40089636. Its totient is φ = 13277472.

The previous prime is 26640671. The next prime is 26640689. The reversal of 26640682 is 28604662.

It can be written as a sum of positive squares in 2 ways, for example, as 26635921 + 4761 = 5161^2 + 69^2 .

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

It is not an unprimeable number, because it can be changed into a prime (26640689) 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, 20653 + ... + 21904.

Almost surely, 2^26640682 is an apocalyptic number.

26640682 is a deficient number, since it is larger than the sum of its proper divisors (13448954).

26640682 is a wasteful number, since it uses less digits than its factorization.

26640682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42872.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 26640682 is about 5161.4612272108. The cubic root of 26640682 is about 298.6632450603.

The spelling of 26640682 in words is "twenty-six million, six hundred forty thousand, six hundred eighty-two".