27020729 has 2 divisors, whose sum is σ = 27020730. Its totient is φ = 27020728.

The previous prime is 27020713. The next prime is 27020737. The reversal of 27020729 is 92702072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21949225 + 5071504 = 4685^2 + 2252^2 .

It is a cyclic number.

It is not a de Polignac number, because 27020729 - 2⁴ = 27020713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27020759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13510364 + 13510365.

It is an arithmetic number, because the mean of its divisors is an integer number (13510365).

Almost surely, 2^27020729 is an apocalyptic number.

It is an amenable number.

27020729 is a deficient number, since it is larger than the sum of its proper divisors (1).

27020729 is an equidigital number, since it uses as much as digits as its factorization.

27020729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 27020729 is about 5198.1466889652. The cubic root of 27020729 is about 300.0767544349.

The spelling of 27020729 in words is "twenty-seven million, twenty thousand, seven hundred twenty-nine".