6766400699 has 2 divisors, whose sum is σ = 6766400700. Its totient is φ = 6766400698.

The previous prime is 6766400681. The next prime is 6766400723. The reversal of 6766400699 is 9960046676.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6766400699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6766400699.

It is not a weakly prime, because it can be changed into another prime (6766400609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3383200349 + 3383200350.

It is an arithmetic number, because the mean of its divisors is an integer number (3383200350).

Almost surely, 2^6766400699 is an apocalyptic number.

6766400699 is a deficient number, since it is larger than the sum of its proper divisors (1).

6766400699 is an equidigital number, since it uses as much as digits as its factorization.

6766400699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 53.

The square root of 6766400699 is about 82258.1345460739. The cubic root of 6766400699 is about 1891.4109728268.

The spelling of 6766400699 in words is "six billion, seven hundred sixty-six million, four hundred thousand, six hundred ninety-nine".