12577823 has 4 divisors (see below), whose sum is σ = 12586128. Its totient is φ = 12569520.

The previous prime is 12577819. The next prime is 12577879. The reversal of 12577823 is 32877521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32877521 = 73 ⋅450377.

It is a cyclic number.

It is not a de Polignac number, because 12577823 - 2² = 12577819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12577813) 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 3 ways as a sum of consecutive naturals, for example, 1163 + ... + 5148.

It is an arithmetic number, because the mean of its divisors is an integer number (3146532).

Almost surely, 2^12577823 is an apocalyptic number.

12577823 is a deficient number, since it is larger than the sum of its proper divisors (8305).

12577823 is an equidigital number, since it uses as much as digits as its factorization.

12577823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8304.

The product of its digits is 23520, while the sum is 35.

The square root of 12577823 is about 3546.5226631166. The cubic root of 12577823 is about 232.5600754305.

The spelling of 12577823 in words is "twelve million, five hundred seventy-seven thousand, eight hundred twenty-three".