6667400699 has 2 divisors, whose sum is σ = 6667400700. Its totient is φ = 6667400698.

The previous prime is 6667400657. The next prime is 6667400767. The reversal of 6667400699 is 9960047666.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6667400699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6667400699.

It is not a weakly prime, because it can be changed into another prime (6667400099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333700349 + 3333700350.

It is an arithmetic number, because the mean of its divisors is an integer number (3333700350).

Almost surely, 2^6667400699 is an apocalyptic number.

6667400699 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667400699 is an equidigital number, since it uses as much as digits as its factorization.

6667400699 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 6667400699 is about 81654.1529807272. The cubic root of 6667400699 is about 1882.1411303142.

The spelling of 6667400699 in words is "six billion, six hundred sixty-seven million, four hundred thousand, six hundred ninety-nine".