27785641 has 8 divisors (see below), whose sum is σ = 30888704. Its totient is φ = 24820560.

The previous prime is 27785629. The next prime is 27785647. The reversal of 27785641 is 14658772.

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 27785641 - 2⁵ = 27785609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27785594 and 27785603.

It is not an unprimeable number, because it can be changed into a prime (27785647) 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, 34071 + ... + 34876.

It is an arithmetic number, because the mean of its divisors is an integer number (3861088).

Almost surely, 2^27785641 is an apocalyptic number.

It is an amenable number.

27785641 is a deficient number, since it is larger than the sum of its proper divisors (3103063).

27785641 is a wasteful number, since it uses less digits than its factorization.

27785641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68991.

The product of its digits is 94080, while the sum is 40.

The square root of 27785641 is about 5271.2086849223. The cubic root of 27785641 is about 302.8820062887.

The spelling of 27785641 in words is "twenty-seven million, seven hundred eighty-five thousand, six hundred forty-one".