6398013077 has 2 divisors, whose sum is σ = 6398013078. Its totient is φ = 6398013076.

The previous prime is 6398013073. The next prime is 6398013103. The reversal of 6398013077 is 7703108936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3575322436 + 2822690641 = 59794^2 + 53129^2 .

It is a cyclic number.

It is not a de Polignac number, because 6398013077 - 2² = 6398013073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6398013071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3199006538 + 3199006539.

It is an arithmetic number, because the mean of its divisors is an integer number (3199006539).

Almost surely, 2^6398013077 is an apocalyptic number.

It is an amenable number.

6398013077 is a deficient number, since it is larger than the sum of its proper divisors (1).

6398013077 is an equidigital number, since it uses as much as digits as its factorization.

6398013077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 6398013077 is about 79987.5807672666. The cubic root of 6398013077 is about 1856.4433785666.

The spelling of 6398013077 in words is "six billion, three hundred ninety-eight million, thirteen thousand, seventy-seven".