26680647 has 12 divisors (see below), whose sum is σ = 41382456. Its totient is φ = 15246000.

The previous prime is 26680637. The next prime is 26680649. The reversal of 26680647 is 74608662.

It is not a de Polignac number, because 26680647 - 2⁷ = 26680519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26680649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90604 + ... + 90897.

It is an arithmetic number, because the mean of its divisors is an integer number (3448538).

Almost surely, 2^26680647 is an apocalyptic number.

26680647 is a deficient number, since it is larger than the sum of its proper divisors (14701809).

26680647 is a wasteful number, since it uses less digits than its factorization.

26680647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181518 (or 181511 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 26680647 is about 5165.3312575284. The cubic root of 26680647 is about 298.8125169261.

The spelling of 26680647 in words is "twenty-six million, six hundred eighty thousand, six hundred forty-seven".