26660680 has 32 divisors (see below), whose sum is σ = 62596800. Its totient is φ = 10200256.

The previous prime is 26660677. The next prime is 26660681. The reversal of 26660680 is 8606662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26660681) 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, 13570 + ... + 15409.

It is an arithmetic number, because the mean of its divisors is an integer number (1956150).

Almost surely, 2^26660680 is an apocalyptic number.

26660680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26660680 is an abundant number, since it is smaller than the sum of its proper divisors (35936120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26660680 is a wasteful number, since it uses less digits than its factorization.

26660680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29013 (or 29009 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 26660680 is about 5163.3981058989. The cubic root of 26660680 is about 298.7379575335.

The spelling of 26660680 in words is "twenty-six million, six hundred sixty thousand, six hundred eighty".