66674006699 has 2 divisors, whose sum is σ = 66674006700. Its totient is φ = 66674006698.

The previous prime is 66674006687. The next prime is 66674006717. The reversal of 66674006699 is 99660047666.

66674006699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66674006699 is a prime.

It is not a weakly prime, because it can be changed into another prime (66674006669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33337003349 + 33337003350.

It is an arithmetic number, because the mean of its divisors is an integer number (33337003350).

Almost surely, 2^66674006699 is an apocalyptic number.

66674006699 is a deficient number, since it is larger than the sum of its proper divisors (1).

66674006699 is an equidigital number, since it uses as much as digits as its factorization.

66674006699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17635968, while the sum is 59.

The spelling of 66674006699 in words is "sixty-six billion, six hundred seventy-four million, six thousand, six hundred ninety-nine".