6697777907 has 2 divisors, whose sum is σ = 6697777908. Its totient is φ = 6697777906.

The previous prime is 6697777897. The next prime is 6697777939. The reversal of 6697777907 is 7097777966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6697777907 - 2¹⁴ = 6697761523 is a prime.

It is not a weakly prime, because it can be changed into another prime (6697777987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3348888953 + 3348888954.

It is an arithmetic number, because the mean of its divisors is an integer number (3348888954).

Almost surely, 2^6697777907 is an apocalyptic number.

6697777907 is a deficient number, since it is larger than the sum of its proper divisors (1).

6697777907 is an equidigital number, since it uses as much as digits as its factorization.

6697777907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49009212, while the sum is 65.

The square root of 6697777907 is about 81839.9529997421. The cubic root of 6697777907 is about 1884.9951951508.

The spelling of 6697777907 in words is "six billion, six hundred ninety-seven million, seven hundred seventy-seven thousand, nine hundred seven".