666076459 has 2 divisors, whose sum is σ = 666076460. Its totient is φ = 666076458.

The previous prime is 666076423. The next prime is 666076487. The reversal of 666076459 is 954670666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666076459 - 2¹³ = 666068267 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (666079459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333038229 + 333038230.

It is an arithmetic number, because the mean of its divisors is an integer number (333038230).

Almost surely, 2^666076459 is an apocalyptic number.

666076459 is a deficient number, since it is larger than the sum of its proper divisors (1).

666076459 is an equidigital number, since it uses as much as digits as its factorization.

666076459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The square root of 666076459 is about 25808.4571216491. The cubic root of 666076459 is about 873.3225916781.

The spelling of 666076459 in words is "six hundred sixty-six million, seventy-six thousand, four hundred fifty-nine".