6699356137 has 2 divisors, whose sum is σ = 6699356138. Its totient is φ = 6699356136.

The previous prime is 6699356117. The next prime is 6699356267. The reversal of 6699356137 is 7316539966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6695985241 + 3370896 = 81829^2 + 1836^2 .

It is a cyclic number.

It is not a de Polignac number, because 6699356137 - 2⁷ = 6699356009 is a prime.

It is not a weakly prime, because it can be changed into another prime (6699356117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349678068 + 3349678069.

It is an arithmetic number, because the mean of its divisors is an integer number (3349678069).

Almost surely, 2^6699356137 is an apocalyptic number.

It is an amenable number.

6699356137 is a deficient number, since it is larger than the sum of its proper divisors (1).

6699356137 is an equidigital number, since it uses as much as digits as its factorization.

6699356137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5511240, while the sum is 55.

The square root of 6699356137 is about 81849.5946049826. The cubic root of 6699356137 is about 1885.1432403867.

The spelling of 6699356137 in words is "six billion, six hundred ninety-nine million, three hundred fifty-six thousand, one hundred thirty-seven".