8277670561 has 12 divisors (see below), whose sum is σ = 8615875716. Its totient is φ = 7952050560.

The previous prime is 8277670519. The next prime is 8277670571. The reversal of 8277670561 is 1650767728.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6396800400 + 1880870161 = 79980^2 + 43369^2 .

It is not a de Polignac number, because 8277670561 - 2²¹ = 8275573409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8277670501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100221 + ... + 163093.

It is an arithmetic number, because the mean of its divisors is an integer number (717989643).

Almost surely, 2^8277670561 is an apocalyptic number.

It is an amenable number.

8277670561 is a deficient number, since it is larger than the sum of its proper divisors (338205155).

8277670561 is a wasteful number, since it uses less digits than its factorization.

8277670561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63072 (or 63041 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 8277670561 is about 90981.7045399788. The cubic root of 8277670561 is about 2022.8765475258.

The spelling of 8277670561 in words is "eight billion, two hundred seventy-seven million, six hundred seventy thousand, five hundred sixty-one".