166260563 has 8 divisors (see below), whose sum is σ = 193127520. Its totient is φ = 140172480.

The previous prime is 166260557. The next prime is 166260569. The reversal of 166260563 is 365062661.

It is an interprime number because it is at equal distance from previous prime (166260557) and next prime (166260569).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166260563 - 2²² = 162066259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166260569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194258 + ... + 195111.

It is an arithmetic number, because the mean of its divisors is an integer number (24140940).

Almost surely, 2^166260563 is an apocalyptic number.

166260563 is a deficient number, since it is larger than the sum of its proper divisors (26866957).

166260563 is an equidigital number, since it uses as much as digits as its factorization.

166260563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389437.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 166260563 is about 12894.2065672921. The cubic root of 166260563 is about 549.8738696996.

The spelling of 166260563 in words is "one hundred sixty-six million, two hundred sixty thousand, five hundred sixty-three".