27720593 has 2 divisors, whose sum is σ = 27720594. Its totient is φ = 27720592.

The previous prime is 27720577. The next prime is 27720599. The reversal of 27720593 is 39502772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17073424 + 10647169 = 4132^2 + 3263^2 .

It is a cyclic number.

It is not a de Polignac number, because 27720593 - 2⁴ = 27720577 is a prime.

It is not a weakly prime, because it can be changed into another prime (27720599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13860296 + 13860297.

It is an arithmetic number, because the mean of its divisors is an integer number (13860297).

Almost surely, 2^27720593 is an apocalyptic number.

It is an amenable number.

27720593 is a deficient number, since it is larger than the sum of its proper divisors (1).

27720593 is an equidigital number, since it uses as much as digits as its factorization.

27720593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 27720593 is about 5265.0349476523. The cubic root of 27720593 is about 302.6454660888.

The spelling of 27720593 in words is "twenty-seven million, seven hundred twenty thousand, five hundred ninety-three".