20327761 has 2 divisors, whose sum is σ = 20327762. Its totient is φ = 20327760.

The previous prime is 20327729. The next prime is 20327773. The reversal of 20327761 is 16772302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13278736 + 7049025 = 3644^2 + 2655^2 .

It is a cyclic number.

It is not a de Polignac number, because 20327761 - 2⁵ = 20327729 is a prime.

It is not a weakly prime, because it can be changed into another prime (20327711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10163880 + 10163881.

It is an arithmetic number, because the mean of its divisors is an integer number (10163881).

Almost surely, 2^20327761 is an apocalyptic number.

It is an amenable number.

20327761 is a deficient number, since it is larger than the sum of its proper divisors (1).

20327761 is an equidigital number, since it uses as much as digits as its factorization.

20327761 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 28.

The square root of 20327761 is about 4508.6318323855. The cubic root of 20327761 is about 272.9165349286.

The spelling of 20327761 in words is "twenty million, three hundred twenty-seven thousand, seven hundred sixty-one".