660117383 has 2 divisors, whose sum is σ = 660117384. Its totient is φ = 660117382.

The previous prime is 660117377. The next prime is 660117431. The reversal of 660117383 is 383711066.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660117383 is a prime.

It is a congruent number.

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, 330058691 + 330058692.

It is an arithmetic number, because the mean of its divisors is an integer number (330058692).

Almost surely, 2^660117383 is an apocalyptic number.

660117383 is a deficient number, since it is larger than the sum of its proper divisors (1).

660117383 is an equidigital number, since it uses as much as digits as its factorization.

660117383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 660117383 is about 25692.7496192992. The cubic root of 660117383 is about 870.7103824911.

The spelling of 660117383 in words is "six hundred sixty million, one hundred seventeen thousand, three hundred eighty-three".