66760999 has 2 divisors, whose sum is σ = 66761000. Its totient is φ = 66760998.

The previous prime is 66760961. The next prime is 66761017. The reversal of 66760999 is 99906766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66760999 - 2⁹ = 66760487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66763999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33380499 + 33380500.

It is an arithmetic number, because the mean of its divisors is an integer number (33380500).

Almost surely, 2^66760999 is an apocalyptic number.

66760999 is a deficient number, since it is larger than the sum of its proper divisors (1).

66760999 is an equidigital number, since it uses as much as digits as its factorization.

66760999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 52.

The square root of 66760999 is about 8170.7404193255. The cubic root of 66760999 is about 405.6712923394.

The spelling of 66760999 in words is "sixty-six million, seven hundred sixty thousand, nine hundred ninety-nine".