660522059 has 2 divisors, whose sum is σ = 660522060. Its totient is φ = 660522058.

The previous prime is 660522019. The next prime is 660522101. The reversal of 660522059 is 950225066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660522059 - 2²⁰ = 659473483 is a prime.

It is not a weakly prime, because it can be changed into another prime (660522019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330261029 + 330261030.

It is an arithmetic number, because the mean of its divisors is an integer number (330261030).

Almost surely, 2^660522059 is an apocalyptic number.

660522059 is a deficient number, since it is larger than the sum of its proper divisors (1).

660522059 is an equidigital number, since it uses as much as digits as its factorization.

660522059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 660522059 is about 25700.6237083850. The cubic root of 660522059 is about 870.8882718716. Note that the first 3 decimals are identical.

The spelling of 660522059 in words is "six hundred sixty million, five hundred twenty-two thousand, fifty-nine".