27726680685 has 32 divisors (see below), whose sum is σ = 49118003712. Its totient is φ = 13242588480.

The previous prime is 27726680629. The next prime is 27726680701. The reversal of 27726680685 is 58608662772.

It is a happy number.

It is not a de Polignac number, because 27726680685 - 2⁹ = 27726680173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1242979 + ... + 1265088.

It is an arithmetic number, because the mean of its divisors is an integer number (1534937616).

Almost surely, 2^27726680685 is an apocalyptic number.

It is an amenable number.

27726680685 is a deficient number, since it is larger than the sum of its proper divisors (21391323027).

27726680685 is a wasteful number, since it uses less digits than its factorization.

27726680685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508153.

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 27726680685 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred eighty thousand, six hundred eighty-five".