6220402709 has 2 divisors, whose sum is σ = 6220402710. Its totient is φ = 6220402708.

The previous prime is 6220402673. The next prime is 6220402729. The reversal of 6220402709 is 9072040226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6174502084 + 45900625 = 78578^2 + 6775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6220402709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6220402729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110201354 + 3110201355.

It is an arithmetic number, because the mean of its divisors is an integer number (3110201355).

Almost surely, 2^6220402709 is an apocalyptic number.

It is an amenable number.

6220402709 is a deficient number, since it is larger than the sum of its proper divisors (1).

6220402709 is an equidigital number, since it uses as much as digits as its factorization.

6220402709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 6220402709 is about 78869.5296613337. The cubic root of 6220402709 is about 1839.1034846681.

The spelling of 6220402709 in words is "six billion, two hundred twenty million, four hundred two thousand, seven hundred nine".