6720431077 has 2 divisors, whose sum is σ = 6720431078. Its totient is φ = 6720431076.

The previous prime is 6720431071. The next prime is 6720431083. The reversal of 6720431077 is 7701340276.

It is a balanced prime because it is at equal distance from previous prime (6720431071) and next prime (6720431083).

It can be written as a sum of positive squares in only one way, i.e., 6059221281 + 661209796 = 77841^2 + 25714^2 .

It is a cyclic number.

It is not a de Polignac number, because 6720431077 - 2²⁷ = 6586213349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6720431071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360215538 + 3360215539.

It is an arithmetic number, because the mean of its divisors is an integer number (3360215539).

Almost surely, 2^6720431077 is an apocalyptic number.

It is an amenable number.

6720431077 is a deficient number, since it is larger than the sum of its proper divisors (1).

6720431077 is an equidigital number, since it uses as much as digits as its factorization.

6720431077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 6720431077 is about 81978.2353859852. The cubic root of 6720431077 is about 1887.1179422434.

The spelling of 6720431077 in words is "six billion, seven hundred twenty million, four hundred thirty-one thousand, seventy-seven".