27922660687 has 8 divisors (see below), whose sum is σ = 28367996832. Its totient is φ = 27480636000.

The previous prime is 27922660669. The next prime is 27922660693. The reversal of 27922660687 is 78606622972.

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

It is a cyclic number.

It is not a de Polignac number, because 27922660687 - 2⁷ = 27922660559 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 (27922660607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810864 + ... + 844597.

It is an arithmetic number, because the mean of its divisors is an integer number (3545999604).

Almost surely, 2^27922660687 is an apocalyptic number.

27922660687 is a deficient number, since it is larger than the sum of its proper divisors (445336145).

27922660687 is a wasteful number, since it uses less digits than its factorization.

27922660687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655729.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 27922660687 in words is "twenty-seven billion, nine hundred twenty-two million, six hundred sixty thousand, six hundred eighty-seven".