660117377 has 2 divisors, whose sum is σ = 660117378. Its totient is φ = 660117376.

The previous prime is 660117373. The next prime is 660117383. The reversal of 660117377 is 773711066.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492129856 + 167987521 = 22184^2 + 12961^2 .

It is a cyclic number.

It is not a de Polignac number, because 660117377 - 2² = 660117373 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 660117377.

It is not a weakly prime, because it can be changed into another prime (660117373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330058688 + 330058689.

It is an arithmetic number, because the mean of its divisors is an integer number (330058689).

Almost surely, 2^660117377 is an apocalyptic number.

It is an amenable number.

660117377 is a deficient number, since it is larger than the sum of its proper divisors (1).

660117377 is an equidigital number, since it uses as much as digits as its factorization.

660117377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 660117377 is about 25692.7495025348. The cubic root of 660117377 is about 870.7103798531.

The spelling of 660117377 in words is "six hundred sixty million, one hundred seventeen thousand, three hundred seventy-seven".