12577877 has 4 divisors (see below), whose sum is σ = 13545420. Its totient is φ = 11610336.

The previous prime is 12577819. The next prime is 12577879. The reversal of 12577877 is 77877521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4363921 + 8213956 = 2089^2 + 2866^2 .

It is a cyclic number.

It is not a de Polignac number, because 12577877 - 2⁶ = 12577813 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 (12577879) 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, 483752 + ... + 483777.

It is an arithmetic number, because the mean of its divisors is an integer number (3386355).

Almost surely, 2^12577877 is an apocalyptic number.

It is an amenable number.

12577877 is a deficient number, since it is larger than the sum of its proper divisors (967543).

12577877 is an equidigital number, since it uses as much as digits as its factorization.

12577877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967542.

The product of its digits is 192080, while the sum is 44.

The square root of 12577877 is about 3546.5302761995. The cubic root of 12577877 is about 232.5604082445.

The spelling of 12577877 in words is "twelve million, five hundred seventy-seven thousand, eight hundred seventy-seven".