676648861 has 4 divisors (see below), whose sum is σ = 773312992. Its totient is φ = 579984732.

The previous prime is 676648849. The next prime is 676648877. The reversal of 676648861 is 168846676.

It is a happy number.

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 676648861 - 2⁵ = 676648829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 676648799 and 676648808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676648261) 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, 48332055 + ... + 48332068.

It is an arithmetic number, because the mean of its divisors is an integer number (193328248).

Almost surely, 2^676648861 is an apocalyptic number.

It is an amenable number.

676648861 is a deficient number, since it is larger than the sum of its proper divisors (96664131).

676648861 is an equidigital number, since it uses as much as digits as its factorization.

676648861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96664130.

The product of its digits is 2322432, while the sum is 52.

The square root of 676648861 is about 26012.4751033038. The cubic root of 676648861 is about 877.9190071493.

The spelling of 676648861 in words is "six hundred seventy-six million, six hundred forty-eight thousand, eight hundred sixty-one".