660747383 has 2 divisors, whose sum is σ = 660747384. Its totient is φ = 660747382.

The previous prime is 660747341. The next prime is 660747403. The reversal of 660747383 is 383747066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660747383 - 2⁸ = 660747127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660747083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330373691 + 330373692.

It is an arithmetic number, because the mean of its divisors is an integer number (330373692).

Almost surely, 2^660747383 is an apocalyptic number.

660747383 is a deficient number, since it is larger than the sum of its proper divisors (1).

660747383 is an equidigital number, since it uses as much as digits as its factorization.

660747383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 44.

The square root of 660747383 is about 25705.0069636248. The cubic root of 660747383 is about 870.9872893669.

The spelling of 660747383 in words is "six hundred sixty million, seven hundred forty-seven thousand, three hundred eighty-three".