166610589 has 8 divisors (see below), whose sum is σ = 222420672. Its totient is φ = 110937120.

The previous prime is 166610579. The next prime is 166610599. The reversal of 166610589 is 985016661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (166610579) and next prime (166610599).

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

It is not a de Polignac number, because 166610589 - 2⁴ = 166610573 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 166610589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166610569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31272 + ... + 36209.

It is an arithmetic number, because the mean of its divisors is an integer number (27802584).

Almost surely, 2^166610589 is an apocalyptic number.

It is an amenable number.

166610589 is a deficient number, since it is larger than the sum of its proper divisors (55810083).

166610589 is an equidigital number, since it uses as much as digits as its factorization.

166610589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68307.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 166610589 is about 12907.7724259455. The cubic root of 166610589 is about 550.2594797669.

The spelling of 166610589 in words is "one hundred sixty-six million, six hundred ten thousand, five hundred eighty-nine".