666077311 has 2 divisors, whose sum is σ = 666077312. Its totient is φ = 666077310.

The previous prime is 666077299. The next prime is 666077317. The reversal of 666077311 is 113770666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666077311 - 2⁷ = 666077183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666077317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333038655 + 333038656.

It is an arithmetic number, because the mean of its divisors is an integer number (333038656).

Almost surely, 2^666077311 is an apocalyptic number.

666077311 is a deficient number, since it is larger than the sum of its proper divisors (1).

666077311 is an equidigital number, since it uses as much as digits as its factorization.

666077311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 666077311 is about 25808.4736278611. The cubic root of 666077311 is about 873.3229640430.

The spelling of 666077311 in words is "six hundred sixty-six million, seventy-seven thousand, three hundred eleven".