1660086523 has 2 divisors, whose sum is σ = 1660086524. Its totient is φ = 1660086522.

The previous prime is 1660086401. The next prime is 1660086539. The reversal of 1660086523 is 3256800661.

It is a strong prime.

It is an emirp because it is prime and its reverse (3256800661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1660086523 - 2²¹ = 1657989371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1660080523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830043261 + 830043262.

It is an arithmetic number, because the mean of its divisors is an integer number (830043262).

Almost surely, 2^1660086523 is an apocalyptic number.

1660086523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660086523 is an equidigital number, since it uses as much as digits as its factorization.

1660086523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1660086523 is about 40744.1593728475. The cubic root of 1660086523 is about 1184.0687189521.

The spelling of 1660086523 in words is "one billion, six hundred sixty million, eighty-six thousand, five hundred twenty-three".