123586561 has 4 divisors (see below), whose sum is σ = 141241792. Its totient is φ = 105931332.

The previous prime is 123586559. The next prime is 123586609. The reversal of 123586561 is 165685321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123586561 - 2¹ = 123586559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123586561.

It is not an unprimeable number, because it can be changed into a prime (123586501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8827605 + ... + 8827618.

It is an arithmetic number, because the mean of its divisors is an integer number (35310448).

Almost surely, 2^123586561 is an apocalyptic number.

It is an amenable number.

123586561 is a deficient number, since it is larger than the sum of its proper divisors (17655231).

123586561 is an equidigital number, since it uses as much as digits as its factorization.

123586561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17655230.

The product of its digits is 43200, while the sum is 37.

The square root of 123586561 is about 11116.9492667728. The cubic root of 123586561 is about 498.1082663810.

The spelling of 123586561 in words is "one hundred twenty-three million, five hundred eighty-six thousand, five hundred sixty-one".