660117373 has 2 divisors, whose sum is σ = 660117374. Its totient is φ = 660117372.

The previous prime is 660117331. The next prime is 660117377. The reversal of 660117373 is 373711066.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 640950489 + 19166884 = 25317^2 + 4378^2 .

It is a cyclic number.

It is not a de Polignac number, because 660117373 - 2⁹ = 660116861 is a prime.

It is a super-2 number, since 2×660117373² = 871509892272842258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660117377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330058686 + 330058687.

It is an arithmetic number, because the mean of its divisors is an integer number (330058687).

Almost surely, 2^660117373 is an apocalyptic number.

It is an amenable number.

660117373 is a deficient number, since it is larger than the sum of its proper divisors (1).

660117373 is an equidigital number, since it uses as much as digits as its factorization.

660117373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 660117373 is about 25692.7494246918. The cubic root of 660117373 is about 870.7103780944.

The spelling of 660117373 in words is "six hundred sixty million, one hundred seventeen thousand, three hundred seventy-three".